30220031256 has 16 divisors (see below), whose sum is σ = 75550078200. Its totient is φ = 10073343744.

The previous prime is 30220031243. The next prime is 30220031273. The reversal of 30220031256 is 65213002203.

It is a super-2 number, since 2×30220031256² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1259167969 = 30220031256 / (3 + 0 + 2 + 2 + 0 + 0 + 3 + 1 + 2 + 5 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629583961 + ... + 629584008.

Almost surely, 2^30220031256 is an apocalyptic number.

It is an amenable number.

30220031256 is an abundant number, since it is smaller than the sum of its proper divisors (45330046944).

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

30220031256 is a wasteful number, since it uses less digits than its factorization.

30220031256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259167978 (or 1259167974 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 30220031256 its reverse (65213002203), we get a palindrome (95433033459).

The spelling of 30220031256 in words is "thirty billion, two hundred twenty million, thirty-one thousand, two hundred fifty-six".