31142167620 has 48 divisors (see below), whose sum is σ = 87205724928. Its totient is φ = 8303848960.

The previous prime is 31142167597. The next prime is 31142167627. The reversal of 31142167620 is 2676124113.

It is not an unprimeable number, because it can be changed into a prime (31142167627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339132 + ... + 1362188.

It is an arithmetic number, because the mean of its divisors is an integer number (1816785936).

Almost surely, 2^31142167620 is an apocalyptic number.

31142167620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31142167620 is an abundant number, since it is smaller than the sum of its proper divisors (56063557308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31142167620 is a wasteful number, since it uses less digits than its factorization.

31142167620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45580 (or 45578 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 31142167620 in words is "thirty-one billion, one hundred forty-two million, one hundred sixty-seven thousand, six hundred twenty".