615426231 has 48 divisors (see below), whose sum is σ = 1014902784. Its totient is φ = 329607936.

The previous prime is 615426209. The next prime is 615426263. The reversal of 615426231 is 132624516.

It is not a de Polignac number, because 615426231 - 2¹⁰ = 615425207 is a prime.

It is a super-2 number, since 2×615426231² = 757498891605730722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615426731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 956796 + ... + 957438.

It is an arithmetic number, because the mean of its divisors is an integer number (21143808).

Almost surely, 2^615426231 is an apocalyptic number.

615426231 is a deficient number, since it is larger than the sum of its proper divisors (399476553).

615426231 is a wasteful number, since it uses less digits than its factorization.

615426231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1053 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 615426231 is about 24807.7856932053. The cubic root of 615426231 is about 850.5999137476.

It can be divided in two parts, 6154 and 26231, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 615426231 in words is "six hundred fifteen million, four hundred twenty-six thousand, two hundred thirty-one".