31836880142 has 16 divisors (see below), whose sum is σ = 48730535280. Its totient is φ = 15595210752.

The previous prime is 31836880133. The next prime is 31836880147. The reversal of 31836880142 is 24108863813.

It is a junction number, because it is equal to n+sod(n) for n = 31836880093 and 31836880102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31836880147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425843 + ... + 494990.

It is an arithmetic number, because the mean of its divisors is an integer number (3045658455).

Almost surely, 2^31836880142 is an apocalyptic number.

31836880142 is a deficient number, since it is larger than the sum of its proper divisors (16893655138).

31836880142 is a wasteful number, since it uses less digits than its factorization.

31836880142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921187.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 31836880142 in words is "thirty-one billion, eight hundred thirty-six million, eight hundred eighty thousand, one hundred forty-two".