231251494288 has 10 divisors (see below), whose sum is σ = 448049770214. Its totient is φ = 115625747136.

The previous prime is 231251494217. The next prime is 231251494291. The reversal of 231251494288 is 882494152132.

It can be written as a sum of positive squares in only one way, i.e., 228304307344 + 2947186944 = 477812^2 + 54288^2 .

It is a super-2 number, since 2×231251494288² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7226609181 + ... + 7226609212.

Almost surely, 2^231251494288 is an apocalyptic number.

It is an amenable number.

231251494288 is a deficient number, since it is larger than the sum of its proper divisors (216798275926).

231251494288 is a wasteful number, since it uses less digits than its factorization.

231251494288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453218401 (or 14453218395 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The spelling of 231251494288 in words is "two hundred thirty-one billion, two hundred fifty-one million, four hundred ninety-four thousand, two hundred eighty-eight".