31205012412152 has 16 divisors (see below), whose sum is σ = 58509661435440. Its totient is φ = 15602436029376.

The previous prime is 31205012412149. The next prime is 31205012412181. The reversal of 31205012412152 is 25121421050213.

It is a super-2 number, since 2×31205012412152² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6857693 + ... + 10461260.

It is an arithmetic number, because the mean of its divisors is an integer number (3656853839715).

Almost surely, 2^{31205012412152} is an apocalyptic number.

It is an amenable number.

31205012412152 is a deficient number, since it is larger than the sum of its proper divisors (27304649023288).

31205012412152 is a wasteful number, since it uses less digits than its factorization.

31205012412152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17544182 (or 17544178 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 31205012412152 its reverse (25121421050213), we get a palindrome (56326433462365).

The spelling of 31205012412152 in words is "thirty-one trillion, two hundred five billion, twelve million, four hundred twelve thousand, one hundred fifty-two".