31231120132303 has 64 divisors (see below), whose sum is σ = 40265893140480. Its totient is φ = 23544013920768.

The previous prime is 31231120132273. The next prime is 31231120132409. The reversal of 31231120132303 is 30323102113213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31231120132303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231120132103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 557143225 + ... + 557199277.

It is an arithmetic number, because the mean of its divisors is an integer number (629154580320).

Almost surely, 2^{31231120132303} is an apocalyptic number.

31231120132303 is a deficient number, since it is larger than the sum of its proper divisors (9034773008177).

31231120132303 is a wasteful number, since it uses less digits than its factorization.

31231120132303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57128.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31231120132303 its reverse (30323102113213), we get a palindrome (61554222245516).

The spelling of 31231120132303 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred twenty million, one hundred thirty-two thousand, three hundred three".