1272375131 has 2 divisors, whose sum is σ = 1272375132. Its totient is φ = 1272375130.

The previous prime is 1272375121. The next prime is 1272375193. The reversal of 1272375131 is 1315732721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272375131 is a prime.

It is a super-2 number, since 2×1272375131² = 3237876947974534322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1272375101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636187565 + 636187566.

It is an arithmetic number, because the mean of its divisors is an integer number (636187566).

Almost surely, 2^1272375131 is an apocalyptic number.

1272375131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272375131 is an equidigital number, since it uses as much as digits as its factorization.

1272375131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 32.

The square root of 1272375131 is about 35670.3676880404. The cubic root of 1272375131 is about 1083.6068057738.

The spelling of 1272375131 in words is "one billion, two hundred seventy-two million, three hundred seventy-five thousand, one hundred thirty-one".