31019051340 has 72 divisors (see below), whose sum is σ = 97335660240. Its totient is φ = 7986513024.

The previous prime is 31019051333. The next prime is 31019051351. The reversal of 31019051340 is 4315091013.

31019051340 is a `hidden beast` number, since 3 + 101 + 9 + 0 + 513 + 40 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2965954 + ... + 2976393.

It is an arithmetic number, because the mean of its divisors is an integer number (1351884170).

Almost surely, 2^31019051340 is an apocalyptic number.

31019051340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31019051340 is an abundant number, since it is smaller than the sum of its proper divisors (66316608900).

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

31019051340 is a wasteful number, since it uses less digits than its factorization.

31019051340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942391 (or 5942386 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The spelling of 31019051340 in words is "thirty-one billion, nineteen million, fifty-one thousand, three hundred forty".