31142980946 has 32 divisors (see below), whose sum is σ = 58818096000. Its totient is φ = 12013488000.

The previous prime is 31142980943. The next prime is 31142980961. The reversal of 31142980946 is 64908924113.

It is a self number, because there is not a number n which added to its sum of digits gives 31142980946.

It is not an unprimeable number, because it can be changed into a prime (31142980943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985571 + ... + 1016678.

It is an arithmetic number, because the mean of its divisors is an integer number (1838065500).

Almost surely, 2^31142980946 is an apocalyptic number.

31142980946 is a deficient number, since it is larger than the sum of its proper divisors (27675115054).

31142980946 is a wasteful number, since it uses less digits than its factorization.

31142980946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002370.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 31142980946 in words is "thirty-one billion, one hundred forty-two million, nine hundred eighty thousand, nine hundred forty-six".