1231203960 has 96 divisors (see below), whose sum is σ = 4573052640. Its totient is φ = 281417472.

The previous prime is 1231203947. The next prime is 1231203973. The reversal of 1231203960 is 693021321.

It is an interprime number because it is at equal distance from previous prime (1231203947) and next prime (1231203973).

It is a super-2 number, since 2×1231203960² = 3031726382239363200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241767 + ... + 246806.

It is an arithmetic number, because the mean of its divisors is an integer number (47635965).

Almost surely, 2^1231203960 is an apocalyptic number.

1231203960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231203960 is an abundant number, since it is smaller than the sum of its proper divisors (3341848680).

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

1231203960 is a wasteful number, since it uses less digits than its factorization.

1231203960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488597 (or 488590 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1231203960 is about 35088.5160700763. The cubic root of 1231203960 is about 1071.7907417158.

The spelling of 1231203960 in words is "one billion, two hundred thirty-one million, two hundred three thousand, nine hundred sixty".