1231130012 has 24 divisors (see below), whose sum is σ = 2477013504. Its totient is φ = 524465712.

The previous prime is 1231129883. The next prime is 1231130051. The reversal of 1231130012 is 2100311321.

It is a super-2 number, since 2×1231130012² = 3031362212894240288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126968 + ... + 136319.

It is an arithmetic number, because the mean of its divisors is an integer number (103208896).

Almost surely, 2^1231130012 is an apocalyptic number.

It is an amenable number.

1231130012 is an abundant number, since it is smaller than the sum of its proper divisors (1245883492).

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

1231130012 is a wasteful number, since it uses less digits than its factorization.

1231130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263465 (or 263463 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1231130012 is about 35087.4623191818. The cubic root of 1231130012 is about 1071.7692834870.

Adding to 1231130012 its reverse (2100311321), we get a palindrome (3331441333).

The spelling of 1231130012 in words is "one billion, two hundred thirty-one million, one hundred thirty thousand, twelve".