31402126238 has 32 divisors (see below), whose sum is σ = 55293416640. Its totient is φ = 13094519040.

The previous prime is 31402126219. The next prime is 31402126243. The reversal of 31402126238 is 83262120413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140768 + ... + 287436.

It is an arithmetic number, because the mean of its divisors is an integer number (1727919270).

Almost surely, 2^31402126238 is an apocalyptic number.

31402126238 is a deficient number, since it is larger than the sum of its proper divisors (23891290402).

31402126238 is a wasteful number, since it uses less digits than its factorization.

31402126238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147092.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 31402126238 in words is "thirty-one billion, four hundred two million, one hundred twenty-six thousand, two hundred thirty-eight".