31312204122430 has 64 divisors (see below), whose sum is σ = 70563480791040. Its totient is φ = 9718812633600.

The previous prime is 31312204122383. The next prime is 31312204122469. The reversal of 31312204122430 is 3422140221313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84889611 + ... + 85257670.

It is an arithmetic number, because the mean of its divisors is an integer number (1102554387360).

Almost surely, 2^{31312204122430} is an apocalyptic number.

31312204122430 is an abundant number, since it is smaller than the sum of its proper divisors (39251276668610).

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

31312204122430 is a wasteful number, since it uses less digits than its factorization.

31312204122430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170147545.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31312204122430 its reverse (3422140221313), we get a palindrome (34734344343743).

The spelling of 31312204122430 in words is "thirty-one trillion, three hundred twelve billion, two hundred four million, one hundred twenty-two thousand, four hundred thirty".