31409256930 has 32 divisors (see below), whose sum is σ = 75405168000. Its totient is φ = 8373251712.

The previous prime is 31409256929. The next prime is 31409256943. The reversal of 31409256930 is 3965290413.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58155 + ... + 257294.

It is an arithmetic number, because the mean of its divisors is an integer number (2356411500).

Almost surely, 2^31409256930 is an apocalyptic number.

31409256930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31409256930 is an abundant number, since it is smaller than the sum of its proper divisors (43995911070).

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

31409256930 is a wasteful number, since it uses less digits than its factorization.

31409256930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318778.

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 31409256930 in words is "thirty-one billion, four hundred nine million, two hundred fifty-six thousand, nine hundred thirty".