31426261261000 has 32 divisors (see below), whose sum is σ = 73537451353080. Its totient is φ = 12570504504000.

The previous prime is 31426261260959. The next prime is 31426261261033. The reversal of 31426261261000 is 16216262413.

It can be written as a sum of positive squares in 4 ways, for example, as 3311388157284 + 28114873103716 = 1819722^2 + 5302346^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15713129631 + ... + 15713131630.

Almost surely, 2^{31426261261000} is an apocalyptic number.

It is an amenable number.

31426261261000 is an abundant number, since it is smaller than the sum of its proper divisors (42111190092080).

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

31426261261000 is a wasteful number, since it uses less digits than its factorization.

31426261261000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31426261282 (or 31426261268 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 31426261261000 in words is "thirty-one trillion, four hundred twenty-six billion, two hundred sixty-one million, two hundred sixty-one thousand".