231562240 has 264 divisors, whose sum is σ = 705674592. Its totient is φ = 72253440.

The previous prime is 231562211. The next prime is 231562259. The reversal of 231562240 is 42265132.

It is a congruent number.

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, 3261405 + ... + 3261475.

Almost surely, 2^231562240 is an apocalyptic number.

231562240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231562240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352837296).

231562240 is an abundant number, since it is smaller than the sum of its proper divisors (474112352).

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

231562240 is a wasteful number, since it uses less digits than its factorization.

231562240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 231562240 is about 15217.1692505538. The cubic root of 231562240 is about 614.0766455335.

The spelling of 231562240 in words is "two hundred thirty-one million, five hundred sixty-two thousand, two hundred forty".