712137631 has 8 divisors (see below), whose sum is σ = 732120464. Its totient is φ = 692193600.

The previous prime is 712137623. The next prime is 712137653. The reversal of 712137631 is 136731217.

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 712137631 - 2³ = 712137623 is a prime.

It is a super-2 number, since 2×712137631² = 1014280010972584322, 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 = 712137593 and 712137602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712137691) 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, 29731 + ... + 48043.

It is an arithmetic number, because the mean of its divisors is an integer number (91515058).

Almost surely, 2^712137631 is an apocalyptic number.

712137631 is a deficient number, since it is larger than the sum of its proper divisors (19982833).

712137631 is a wasteful number, since it uses less digits than its factorization.

712137631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19401.

The product of its digits is 5292, while the sum is 31.

The square root of 712137631 is about 26685.9069735319. The cubic root of 712137631 is about 893.0065516771.

Adding to 712137631 its reverse (136731217), we get a palindrome (848868848).

The spelling of 712137631 in words is "seven hundred twelve million, one hundred thirty-seven thousand, six hundred thirty-one".