31493816354 has 72 divisors (see below), whose sum is σ = 65050165404. Its totient is φ = 11326392000.

The previous prime is 31493816287. The next prime is 31493816369. The reversal of 31493816354 is 45361839413.

It can be written as a sum of positive squares in 2 ways, for example, as 30956643025 + 537173329 = 175945^2 + 23177^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31493816299 and 31493816308.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 52004 + ... + 256304.

Almost surely, 2^31493816354 is an apocalyptic number.

31493816354 is an abundant number, since it is smaller than the sum of its proper divisors (33556349050).

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

31493816354 is a wasteful number, since it uses less digits than its factorization.

31493816354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204352 (or 204334 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The spelling of 31493816354 in words is "thirty-one billion, four hundred ninety-three million, eight hundred sixteen thousand, three hundred fifty-four".