1231312192 has 28 divisors (see below), whose sum is σ = 2665512576. Its totient is φ = 559687040.

The previous prime is 1231312183. The next prime is 1231312211. The reversal of 1231312192 is 2912131321.

It is a super-2 number, since 2×1231312192² = 3032259428335689728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873808 + ... + 875215.

Almost surely, 2^1231312192 is an apocalyptic number.

It is an amenable number.

1231312192 is an abundant number, since it is smaller than the sum of its proper divisors (1434200384).

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

1231312192 is a wasteful number, since it uses less digits than its factorization.

1231312192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749046 (or 1749036 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 1231312192 is about 35090.0583071616. The cubic root of 1231312192 is about 1071.8221469257.

The spelling of 1231312192 in words is "one billion, two hundred thirty-one million, three hundred twelve thousand, one hundred ninety-two".