1249332131 has 2 divisors, whose sum is σ = 1249332132. Its totient is φ = 1249332130.

The previous prime is 1249332127. The next prime is 1249332143. The reversal of 1249332131 is 1312339421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1249332131 - 2² = 1249332127 is a prime.

It is a super-2 number, since 2×1249332131² = 3121661547098002322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1249332094 and 1249332103.

It is not a weakly prime, because it can be changed into another prime (1240332131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624666065 + 624666066.

It is an arithmetic number, because the mean of its divisors is an integer number (624666066).

Almost surely, 2^1249332131 is an apocalyptic number.

1249332131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249332131 is an equidigital number, since it uses as much as digits as its factorization.

1249332131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 1249332131 is about 35345.8927033962. The cubic root of 1249332131 is about 1077.0254601519.

The spelling of 1249332131 in words is "one billion, two hundred forty-nine million, three hundred thirty-two thousand, one hundred thirty-one".