769136231 has 4 divisors (see below), whose sum is σ = 795658200. Its totient is φ = 742614264.

The previous prime is 769136209. The next prime is 769136281. The reversal of 769136231 is 132631967.

It is a happy number.

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-769136231 is a prime.

It is a super-2 number, since 2×769136231² = 1183141083673770722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769136281) 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, 13260941 + ... + 13260998.

It is an arithmetic number, because the mean of its divisors is an integer number (198914550).

Almost surely, 2^769136231 is an apocalyptic number.

769136231 is a deficient number, since it is larger than the sum of its proper divisors (26521969).

769136231 is a wasteful number, since it uses less digits than its factorization.

769136231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26521968.

The product of its digits is 40824, while the sum is 38.

The square root of 769136231 is about 27733.3054467007. The cubic root of 769136231 is about 916.2227894966. Note that the first 3 decimals are identical.

The spelling of 769136231 in words is "seven hundred sixty-nine million, one hundred thirty-six thousand, two hundred thirty-one".