113388531 has 8 divisors (see below), whose sum is σ = 151818240. Its totient is φ = 75275592.

The previous prime is 113388529. The next prime is 113388533. The reversal of 113388531 is 135883311.

It is an interprime number because it is at equal distance from previous prime (113388529) and next prime (113388533).

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

It is not a de Polignac number, because 113388531 - 2¹ = 113388529 is a prime.

It is a super-2 number, since 2×113388531² = 25713917924675922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113388492 and 113388501.

It is not an unprimeable number, because it can be changed into a prime (113388533) 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, 78355 + ... + 79788.

It is an arithmetic number, because the mean of its divisors is an integer number (18977280).

Almost surely, 2^113388531 is an apocalyptic number.

113388531 is a deficient number, since it is larger than the sum of its proper divisors (38429709).

113388531 is a wasteful number, since it uses less digits than its factorization.

113388531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158385.

The product of its digits is 8640, while the sum is 33.

The square root of 113388531 is about 10648.4050918436. The cubic root of 113388531 is about 484.0122754326.

The spelling of 113388531 in words is "one hundred thirteen million, three hundred eighty-eight thousand, five hundred thirty-one".