747861251031 has 48 divisors (see below), whose sum is σ = 1151449435136. Its totient is φ = 484794144576.

The previous prime is 747861250951. The next prime is 747861251131. The reversal of 747861251031 is 130152168747.

747861251031 is a `hidden beast` number, since 7 + 4 + 78 + 61 + 2 + 510 + 3 + 1 = 666.

It is not a de Polignac number, because 747861251031 - 2⁹ = 747861250519 is a prime.

It is a super-2 number, since 2×747861251031² (a number of 25 digits) 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 (747861251131) 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, 2169651 + ... + 2490603.

Almost surely, 2^747861251031 is an apocalyptic number.

747861251031 is a deficient number, since it is larger than the sum of its proper divisors (403588184105).

747861251031 is a wasteful number, since it uses less digits than its factorization.

747861251031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321234 (or 321222 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 747861251031 in words is "seven hundred forty-seven billion, eight hundred sixty-one million, two hundred fifty-one thousand, thirty-one".