31213430044303 has 16 divisors (see below), whose sum is σ = 33992754213600. Its totient is φ = 28488158899200.

The previous prime is 31213430044249. The next prime is 31213430044319. The reversal of 31213430044303 is 30344003431213.

It is a de Polignac number, because none of the positive numbers 2^k-31213430044303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213430044393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75752743 + ... + 76163671.

It is an arithmetic number, because the mean of its divisors is an integer number (2124547138350).

Almost surely, 2^{31213430044303} is an apocalyptic number.

31213430044303 is a deficient number, since it is larger than the sum of its proper divisors (2779324169297).

31213430044303 is a wasteful number, since it uses less digits than its factorization.

31213430044303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476682.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 31213430044303 its reverse (30344003431213), we get a palindrome (61557433475516).

The spelling of 31213430044303 in words is "thirty-one trillion, two hundred thirteen billion, four hundred thirty million, forty-four thousand, three hundred three".