113531251540 has 48 divisors (see below), whose sum is σ = 272874172032. Its totient is φ = 38867976576.

The previous prime is 113531251531. The next prime is 113531251541. The reversal of 113531251540 is 45152135311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113531251541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498039 + ... + 689278.

It is an arithmetic number, because the mean of its divisors is an integer number (5684878584).

Almost surely, 2^113531251540 is an apocalyptic number.

113531251540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113531251540 is an abundant number, since it is smaller than the sum of its proper divisors (159342920492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113531251540 is a wasteful number, since it uses less digits than its factorization.

113531251540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188016 (or 1188014 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 113531251540 its reverse (45152135311), we get a palindrome (158683386851).

The spelling of 113531251540 in words is "one hundred thirteen billion, five hundred thirty-one million, two hundred fifty-one thousand, five hundred forty".