1312501269 has 16 divisors (see below), whose sum is σ = 1870267968. Its totient is φ = 815830272.

The previous prime is 1312501249. The next prime is 1312501283. The reversal of 1312501269 is 9621052131.

1312501269 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1312501269 is a prime.

It is a super-2 number, since 2×1312501269² = 3445319162253220722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312501249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114802 + ... + 125715.

It is an arithmetic number, because the mean of its divisors is an integer number (116891748).

Almost surely, 2^1312501269 is an apocalyptic number.

It is an amenable number.

1312501269 is a deficient number, since it is larger than the sum of its proper divisors (557766699).

1312501269 is a wasteful number, since it uses less digits than its factorization.

1312501269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240644.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1312501269 is about 36228.4593793333. The cubic root of 1312501269 is about 1094.8801378360.

The spelling of 1312501269 in words is "one billion, three hundred twelve million, five hundred one thousand, two hundred sixty-nine".