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131031223111101 = 3173252468637979
BaseRepresentation
bin11101110010110000010101…
…100000100000110110111101
3122011221110111020020002122010
4131302300111200200312331
5114133303421104023401
61142402525104041433
736412456600422105
oct3562602540406675
9564843436202563
10131031223111101
1138829036518675
121284288b603279
13581626443c7a1
14244dd33278205
151023651edbed6
hex772c15820dbd

131031223111101 has 8 divisors (see below), whose sum is σ = 175718172034080. Its totient is φ = 86849211464432.

The previous prime is 131031223111099. The next prime is 131031223111211. The reversal of 131031223111101 is 101111322130131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131031223111101 - 21 = 131031223111099 is a prime.

It is a super-2 number, since 2×1310312231111012 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031223111301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126234318471 + ... + 126234319508.

It is an arithmetic number, because the mean of its divisors is an integer number (21964771504260).

Almost surely, 2131031223111101 is an apocalyptic number.

It is an amenable number.

131031223111101 is a deficient number, since it is larger than the sum of its proper divisors (44686948922979).

131031223111101 is a wasteful number, since it uses less digits than its factorization.

131031223111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252468638155.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 131031223111101 its reverse (101111322130131), we get a palindrome (232142545241232).

The spelling of 131031223111101 in words is "one hundred thirty-one trillion, thirty-one billion, two hundred twenty-three million, one hundred eleven thousand, one hundred one".

Divisors: 1 3 173 519 252468637979 757405913937 43677074370367 131031223111101