1264617231 has 8 divisors (see below), whose sum is σ = 1686547200. Its totient is φ = 842882712.

The previous prime is 1264617209. The next prime is 1264617307. The reversal of 1264617231 is 1327164621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1264617231 - 2⁷ = 1264617103 is a prime.

It is a super-2 number, since 2×1264617231² = 3198513481884214722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1264617192 and 1264617201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264610231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33031 + ... + 60168.

It is an arithmetic number, because the mean of its divisors is an integer number (210818400).

Almost surely, 2^1264617231 is an apocalyptic number.

1264617231 is a deficient number, since it is larger than the sum of its proper divisors (421929969).

1264617231 is an equidigital number, since it uses as much as digits as its factorization.

1264617231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97725.

The product of its digits is 12096, while the sum is 33.

The square root of 1264617231 is about 35561.4570989435. The cubic root of 1264617231 is about 1081.3999993889.

The spelling of 1264617231 in words is "one billion, two hundred sixty-four million, six hundred seventeen thousand, two hundred thirty-one".