712631240 has 32 divisors (see below), whose sum is σ = 1614195000. Its totient is φ = 283137024.

The previous prime is 712631237. The next prime is 712631243. The reversal of 712631240 is 42136217.

It is an interprime number because it is at equal distance from previous prime (712631237) and next prime (712631243).

It can be written as a sum of positive squares in 4 ways, for example, as 565203076 + 147428164 = 23774^2 + 12142^2 .

It is not an unprimeable number, because it can be changed into a prime (712631243) 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, 53825 + ... + 65744.

Almost surely, 2^712631240 is an apocalyptic number.

It is an amenable number.

712631240 is an abundant number, since it is smaller than the sum of its proper divisors (901563760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

712631240 is a wasteful number, since it uses less digits than its factorization.

712631240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119729 (or 119725 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 712631240 is about 26695.1538673221. The cubic root of 712631240 is about 893.2128293435.

Adding to 712631240 its reverse (42136217), we get a palindrome (754767457).

The spelling of 712631240 in words is "seven hundred twelve million, six hundred thirty-one thousand, two hundred forty".