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31151313101 = 792231768253
BaseRepresentation
bin11101000000110000…
…110101000011001101
32222101222200200001002
4131000300311003031
51002244214004401
622151040430045
72151646535546
oct350060650315
988358620032
1031151313101
1112236116667
126054618325
132c25a70a5c
1417173034cd
15c24c48a6b
hex740c350cd

31151313101 has 8 divisors (see below), whose sum is σ = 31687111680. Its totient is φ = 30619051632.

The previous prime is 31151313047. The next prime is 31151313113. The reversal of 31151313101 is 10131315113.

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 31151313101 - 210 = 31151312077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31151313161) 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, 866510 + ... + 901743.

It is an arithmetic number, because the mean of its divisors is an integer number (3960888960).

Almost surely, 231151313101 is an apocalyptic number.

It is an amenable number.

31151313101 is a deficient number, since it is larger than the sum of its proper divisors (535798579).

31151313101 is a wasteful number, since it uses less digits than its factorization.

31151313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768555.

The product of its (nonzero) digits is 135, while the sum is 20.

Adding to 31151313101 its reverse (10131315113), we get a palindrome (41282628214).

The spelling of 31151313101 in words is "thirty-one billion, one hundred fifty-one million, three hundred thirteen thousand, one hundred one".

Divisors: 1 79 223 17617 1768253 139691987 394320419 31151313101