1264937231 has 4 divisors (see below), whose sum is σ = 1277461464. Its totient is φ = 1252413000.

The previous prime is 1264937171. The next prime is 1264937239. The reversal of 1264937231 is 1327394621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264937231 is a prime.

It is a super-3 number, since 3×1264937231³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264937239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6261965 + ... + 6262166.

It is an arithmetic number, because the mean of its divisors is an integer number (319365366).

Almost surely, 2^1264937231 is an apocalyptic number.

1264937231 is a deficient number, since it is larger than the sum of its proper divisors (12524233).

1264937231 is a wasteful number, since it uses less digits than its factorization.

1264937231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12524232.

The product of its digits is 54432, while the sum is 38.

The square root of 1264937231 is about 35565.9560675655. The cubic root of 1264937231 is about 1081.4912045397.

The spelling of 1264937231 in words is "one billion, two hundred sixty-four million, nine hundred thirty-seven thousand, two hundred thirty-one".