1264163231 has 8 divisors (see below), whose sum is σ = 1348745904. Its totient is φ = 1180716160.

The previous prime is 1264163213. The next prime is 1264163249. The reversal of 1264163231 is 1323614621.

It is an interprime number because it is at equal distance from previous prime (1264163213) and next prime (1264163249).

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

It is a cyclic number.

It is not a de Polignac number, because 1264163231 - 2¹⁸ = 1263901087 is a prime.

It is a super-2 number, since 2×1264163231² = 3196217349224718722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264163194 and 1264163203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264163731) 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, 281600 + ... + 286053.

It is an arithmetic number, because the mean of its divisors is an integer number (168593238).

Almost surely, 2^1264163231 is an apocalyptic number.

1264163231 is a deficient number, since it is larger than the sum of its proper divisors (84582673).

1264163231 is a wasteful number, since it uses less digits than its factorization.

1264163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567801.

The product of its digits is 5184, while the sum is 29.

The square root of 1264163231 is about 35555.0732104435. The cubic root of 1264163231 is about 1081.2705756785.

Adding to 1264163231 its reverse (1323614621), we get a palindrome (2587777852).

The spelling of 1264163231 in words is "one billion, two hundred sixty-four million, one hundred sixty-three thousand, two hundred thirty-one".