612507231 has 32 divisors (see below), whose sum is σ = 1072819200. Its totient is φ = 337932000.

The previous prime is 612507223. The next prime is 612507239. The reversal of 612507231 is 132705216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (612507223) and next prime (612507239).

It is not a de Polignac number, because 612507231 - 2³ = 612507223 is a prime.

It is a super-2 number, since 2×612507231² = 750330216054574722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 612507195 and 612507204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612507239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50395 + ... + 61356.

It is an arithmetic number, because the mean of its divisors is an integer number (33525600).

Almost surely, 2^612507231 is an apocalyptic number.

612507231 is a deficient number, since it is larger than the sum of its proper divisors (460311969).

612507231 is a wasteful number, since it uses less digits than its factorization.

612507231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111796 (or 111790 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 612507231 is about 24748.8834293590. The cubic root of 612507231 is about 849.2529681072.

The spelling of 612507231 in words is "six hundred twelve million, five hundred seven thousand, two hundred thirty-one".