231712456 has 8 divisors (see below), whose sum is σ = 434460870. Its totient is φ = 115856224.

The previous prime is 231712441. The next prime is 231712469. The reversal of 231712456 is 654217132.

It can be written as a sum of positive squares in only one way, i.e., 214622500 + 17089956 = 14650^2 + 4134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14482021 + ... + 14482036.

Almost surely, 2^231712456 is an apocalyptic number.

It is an amenable number.

231712456 is a deficient number, since it is larger than the sum of its proper divisors (202748414).

231712456 is a wasteful number, since it uses less digits than its factorization.

231712456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28964063 (or 28964059 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 231712456 is about 15222.1041909455. The cubic root of 231712456 is about 614.2094020631.

Adding to 231712456 its reverse (654217132), we get a palindrome (885929588).

The spelling of 231712456 in words is "two hundred thirty-one million, seven hundred twelve thousand, four hundred fifty-six".