31251541345423 has 16 divisors (see below), whose sum is σ = 36687991472704. Its totient is φ = 26058339601920.

The previous prime is 31251541345399. The next prime is 31251541345441. The reversal of 31251541345423 is 32454314515213.

It is a cyclic number.

It is not a de Polignac number, because 31251541345423 - 2²¹ = 31251539248271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31251541345423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31251541343423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9497640 + ... + 12357517.

It is an arithmetic number, because the mean of its divisors is an integer number (2292999467044).

Almost surely, 2^{31251541345423} is an apocalyptic number.

31251541345423 is a deficient number, since it is larger than the sum of its proper divisors (5436450127281).

31251541345423 is a wasteful number, since it uses less digits than its factorization.

31251541345423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21860722.

The product of its digits is 864000, while the sum is 43.

The spelling of 31251541345423 in words is "thirty-one trillion, two hundred fifty-one billion, five hundred forty-one million, three hundred forty-five thousand, four hundred twenty-three".