31142703270 has 64 divisors (see below), whose sum is σ = 85527622656. Its totient is φ = 7109362560.

The previous prime is 31142703209. The next prime is 31142703349. The reversal of 31142703270 is 7230724113.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74335 + ... + 260405.

It is an arithmetic number, because the mean of its divisors is an integer number (1336369104).

Almost surely, 2^31142703270 is an apocalyptic number.

31142703270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31142703270 is an abundant number, since it is smaller than the sum of its proper divisors (54384919386).

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

31142703270 is a wasteful number, since it uses less digits than its factorization.

31142703270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186885.

The product of its (nonzero) digits is 7056, while the sum is 30.

The spelling of 31142703270 in words is "thirty-one billion, one hundred forty-two million, seven hundred three thousand, two hundred seventy".