30213020031 has 16 divisors (see below), whose sum is σ = 42423628800. Its totient is φ = 19073181888.

The previous prime is 30213020029. The next prime is 30213020093. The reversal of 30213020031 is 13002031203.

It is not a de Polignac number, because 30213020031 - 2¹ = 30213020029 is a prime.

It is a super-2 number, since 2×30213020031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213021031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5715 + ... + 245883.

It is an arithmetic number, because the mean of its divisors is an integer number (2651476800).

Almost surely, 2^30213020031 is an apocalyptic number.

30213020031 is a deficient number, since it is larger than the sum of its proper divisors (12210608769).

30213020031 is a wasteful number, since it uses less digits than its factorization.

30213020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242398.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30213020031 its reverse (13002031203), we get a palindrome (43215051234).

The spelling of 30213020031 in words is "thirty billion, two hundred thirteen million, twenty thousand, thirty-one".