1264113731 has 2 divisors, whose sum is σ = 1264113732. Its totient is φ = 1264113730.

The previous prime is 1264113707. The next prime is 1264113733. The reversal of 1264113731 is 1373114621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264113731 - 2¹⁴ = 1264097347 is a prime.

It is a super-2 number, since 2×1264113731² = 3195967049805480722, which contains 22 as substring.

Together with 1264113733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1264113694 and 1264113703.

It is not a weakly prime, because it can be changed into another prime (1264113733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632056865 + 632056866.

It is an arithmetic number, because the mean of its divisors is an integer number (632056866).

Almost surely, 2^1264113731 is an apocalyptic number.

1264113731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264113731 is an equidigital number, since it uses as much as digits as its factorization.

1264113731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 1264113731 is about 35554.3771004359. The cubic root of 1264113731 is about 1081.2564626297.

The spelling of 1264113731 in words is "one billion, two hundred sixty-four million, one hundred thirteen thousand, seven hundred thirty-one".