1231306232 has 32 divisors (see below), whose sum is σ = 2491458480. Its totient is φ = 567114240.

The previous prime is 1231306231. The next prime is 1231306249. The reversal of 1231306232 is 2326031321.

It is a super-2 number, since 2×1231306232² = 3032230073924075648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231306198 and 1231306207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231306231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39008 + ... + 63120.

Almost surely, 2^1231306232 is an apocalyptic number.

It is an amenable number.

1231306232 is an abundant number, since it is smaller than the sum of its proper divisors (1260152248).

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

1231306232 is a wasteful number, since it uses less digits than its factorization.

1231306232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24623 (or 24619 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1231306232 is about 35089.9733827200. The cubic root of 1231306232 is about 1071.8204175862.

Adding to 1231306232 its reverse (2326031321), we get a palindrome (3557337553).

The spelling of 1231306232 in words is "one billion, two hundred thirty-one million, three hundred six thousand, two hundred thirty-two".