157831344 has 120 divisors (see below), whose sum is σ = 495070992. Its totient is φ = 46517760.

The previous prime is 157831337. The next prime is 157831357. The reversal of 157831344 is 443138751.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 157831299 and 157831308.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57262 + ... + 59954.

Almost surely, 2^157831344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157831344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247535496).

157831344 is an abundant number, since it is smaller than the sum of its proper divisors (337239648).

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

157831344 is a wasteful number, since it uses less digits than its factorization.

157831344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2746 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 157831344 is about 12563.0945232455. The cubic root of 157831344 is about 540.4195915794.

The spelling of 157831344 in words is "one hundred fifty-seven million, eight hundred thirty-one thousand, three hundred forty-four".