31231304404030 has 64 divisors (see below), whose sum is σ = 59250227742720. Its totient is φ = 11820005395200.

The previous prime is 31231304404021. The next prime is 31231304404033. The reversal of 31231304404030 is 3040440313213.

It is a self number, because there is not a number n which added to its sum of digits gives 31231304404030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231304404033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486202015 + ... + 486266245.

It is an arithmetic number, because the mean of its divisors is an integer number (925784808480).

Almost surely, 2^{31231304404030} is an apocalyptic number.

31231304404030 is a deficient number, since it is larger than the sum of its proper divisors (28018923338690).

31231304404030 is a wasteful number, since it uses less digits than its factorization.

31231304404030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67465.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31231304404030 its reverse (3040440313213), we get a palindrome (34271744717243).

The spelling of 31231304404030 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred four million, four hundred four thousand, thirty".