1257303431892 has 48 divisors (see below), whose sum is σ = 3063748165632. Its totient is φ = 400553593440.

The previous prime is 1257303431819. The next prime is 1257303431893. The reversal of 1257303431892 is 2981343037521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257303431893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1510548 + ... + 2190059.

It is an arithmetic number, because the mean of its divisors is an integer number (63828086784).

Almost surely, 2^{1257303431892} is an apocalyptic number.

1257303431892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257303431892 is an abundant number, since it is smaller than the sum of its proper divisors (1806444733740).

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

1257303431892 is a wasteful number, since it uses less digits than its factorization.

1257303431892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701868 (or 3701866 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 1257303431892 in words is "one trillion, two hundred fifty-seven billion, three hundred three million, four hundred thirty-one thousand, eight hundred ninety-two".