117531372 has 24 divisors (see below), whose sum is σ = 313417216. Its totient is φ = 33580368.

The previous prime is 117531371. The next prime is 117531373. The reversal of 117531372 is 273135711.

It is an interprime number because it is at equal distance from previous prime (117531371) and next prime (117531373).

It is not an unprimeable number, because it can be changed into a prime (117531371) 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, 699508 + ... + 699675.

Almost surely, 2^117531372 is an apocalyptic number.

117531372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117531372 is an abundant number, since it is smaller than the sum of its proper divisors (195885844).

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

117531372 is a wasteful number, since it uses less digits than its factorization.

117531372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399197 (or 1399195 counting only the distinct ones).

The product of its digits is 4410, while the sum is 30.

The square root of 117531372 is about 10841.1886802140. The cubic root of 117531372 is about 489.8366413659.

The spelling of 117531372 in words is "one hundred seventeen million, five hundred thirty-one thousand, three hundred seventy-two".