113513001231 has 8 divisors (see below), whose sum is σ = 172972192384. Its totient is φ = 64864572120.

The previous prime is 113513001221. The next prime is 113513001241. The reversal of 113513001231 is 132100315311.

It is an interprime number because it is at equal distance from previous prime (113513001221) and next prime (113513001241).

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

It is not a de Polignac number, because 113513001231 - 2³⁵ = 79153262863 is a prime.

It is a super-3 number, since 3×113513001231³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5405381011 = 113513001231 / (1 + 1 + 3 + 5 + 1 + 3 + 0 + 0 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113513001198 and 113513001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113513001221) 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, 2702690485 + ... + 2702690526.

It is an arithmetic number, because the mean of its divisors is an integer number (21621524048).

Almost surely, 2^113513001231 is an apocalyptic number.

113513001231 is a deficient number, since it is larger than the sum of its proper divisors (59459191153).

113513001231 is an equidigital number, since it uses as much as digits as its factorization.

113513001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405381021.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 113513001231 its reverse (132100315311), we get a palindrome (245613316542).

The spelling of 113513001231 in words is "one hundred thirteen billion, five hundred thirteen million, one thousand, two hundred thirty-one".