231251269388 has 12 divisors (see below), whose sum is σ = 404713826832. Its totient is φ = 115618747440.

The previous prime is 231251269373. The next prime is 231251269423. The reversal of 231251269388 is 883962152132.

It is a happy number.

It is a super-2 number, since 2×231251269388² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645895 + ... + 1780862.

It is an arithmetic number, because the mean of its divisors is an integer number (33726152236).

Almost surely, 2^231251269388 is an apocalyptic number.

It is an amenable number.

231251269388 is a deficient number, since it is larger than the sum of its proper divisors (173462557444).

231251269388 is a wasteful number, since it uses less digits than its factorization.

231251269388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443632 (or 3443630 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The spelling of 231251269388 in words is "two hundred thirty-one billion, two hundred fifty-one million, two hundred sixty-nine thousand, three hundred eighty-eight".