113154287981 has 8 divisors (see below), whose sum is σ = 129337567680. Its totient is φ = 96975603648.

The previous prime is 113154287977. The next prime is 113154288041. The reversal of 113154287981 is 189782451311.

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

It is not a de Polignac number, because 113154287981 - 2² = 113154287977 is a prime.

It is a super-2 number, since 2×113154287981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113154283981) 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, 1095911 + ... + 1194708.

It is an arithmetic number, because the mean of its divisors is an integer number (16167195960).

Almost surely, 2^113154287981 is an apocalyptic number.

It is an amenable number.

113154287981 is a deficient number, since it is larger than the sum of its proper divisors (16183279699).

113154287981 is an equidigital number, since it uses as much as digits as its factorization.

113154287981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297683.

The product of its digits is 483840, while the sum is 50.

The spelling of 113154287981 in words is "one hundred thirteen billion, one hundred fifty-four million, two hundred eighty-seven thousand, nine hundred eighty-one".