231553116 has 36 divisors (see below), whose sum is σ = 585785200. Its totient is φ = 77122368.

The previous prime is 231553109. The next prime is 231553123. The reversal of 231553116 is 611355132.

231553116 = T₄₁₂₈ + T₄₁₂₉ + ... + T₄₁₅₄.

It is an interprime number because it is at equal distance from previous prime (231553109) and next prime (231553123).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 231553116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73665 + ... + 76743.

Almost surely, 2^231553116 is an apocalyptic number.

It is an amenable number.

231553116 is an abundant number, since it is smaller than the sum of its proper divisors (354232084).

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

231553116 is a wasteful number, since it uses less digits than its factorization.

231553116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178 (or 5173 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 231553116 is about 15216.8694546546. The cubic root of 231553116 is about 614.0685801585.

The spelling of 231553116 in words is "two hundred thirty-one million, five hundred fifty-three thousand, one hundred sixteen".