113201131257 has 8 divisors (see below), whose sum is σ = 167705379680. Its totient is φ = 75467420820.

The previous prime is 113201131243. The next prime is 113201131259. The reversal of 113201131257 is 752131102311.

113201131257 is a `hidden beast` number, since 11 + 320 + 11 + 312 + 5 + 7 = 666.

It is not a de Polignac number, because 113201131257 - 2⁷ = 113201131129 is a prime.

It is a super-2 number, since 2×113201131257² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4192634491 = 113201131257 / (1 + 1 + 3 + 2 + 0 + 1 + 1 + 3 + 1 + 2 + 5 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113201131257.

It is not an unprimeable number, because it can be changed into a prime (113201131259) 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, 2096317219 + ... + 2096317272.

It is an arithmetic number, because the mean of its divisors is an integer number (20963172460).

Almost surely, 2^113201131257 is an apocalyptic number.

It is an amenable number.

113201131257 is a deficient number, since it is larger than the sum of its proper divisors (54504248423).

113201131257 is an equidigital number, since it uses as much as digits as its factorization.

113201131257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192634500 (or 4192634494 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

Adding to 113201131257 its reverse (752131102311), we get a palindrome (865332233568).

The spelling of 113201131257 in words is "one hundred thirteen billion, two hundred one million, one hundred thirty-one thousand, two hundred fifty-seven".