31213413443303 has 16 divisors (see below), whose sum is σ = 38416716903936. Its totient is φ = 24696193373280.

The previous prime is 31213413443281. The next prime is 31213413443363. The reversal of 31213413443303 is 30334431431213.

It is a happy number.

It is not a de Polignac number, because 31213413443303 - 2²⁴ = 31213396666087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213413443363) 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, 18096158 + ... + 19745828.

It is an arithmetic number, because the mean of its divisors is an integer number (2401044806496).

Almost surely, 2^{31213413443303} is an apocalyptic number.

31213413443303 is a deficient number, since it is larger than the sum of its proper divisors (7203303460633).

31213413443303 is a wasteful number, since it uses less digits than its factorization.

31213413443303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857614.

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 31213413443303 its reverse (30334431431213), we get a palindrome (61547844874516).

The spelling of 31213413443303 in words is "thirty-one trillion, two hundred thirteen billion, four hundred thirteen million, four hundred forty-three thousand, three hundred three".