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131011302021 = 3166726197021
BaseRepresentation
bin111101000000011100…
…0011101001010000101
3110112011101212201012020
41322000320131022011
54121302343131041
6140104042513353
712315403456515
oct1720070351205
9415141781166
10131011302021
115061a512326
1221483505859
13c47b56b0b2
1464ab919845
15361ba28866
hex1e80e1d285

131011302021 has 8 divisors (see below), whose sum is σ = 174786530784. Its totient is φ = 87288470640.

The previous prime is 131011302011. The next prime is 131011302031. The reversal of 131011302021 is 120203110131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131011302011) and next prime (131011302031).

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

It is not a de Polignac number, because 131011302021 - 210 = 131011300997 is a prime.

It is a super-2 number, since 2×1310113020212 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011302011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13093510 + ... + 13103511.

It is an arithmetic number, because the mean of its divisors is an integer number (21848316348).

Almost surely, 2131011302021 is an apocalyptic number.

It is an amenable number.

131011302021 is a deficient number, since it is larger than the sum of its proper divisors (43775228763).

131011302021 is a wasteful number, since it uses less digits than its factorization.

131011302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26198691.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131011302021 its reverse (120203110131), we get a palindrome (251214412152).

The spelling of 131011302021 in words is "one hundred thirty-one billion, eleven million, three hundred two thousand, twenty-one".

Divisors: 1 3 1667 5001 26197021 78591063 43670434007 131011302021