31489348402 has 8 divisors (see below), whose sum is σ = 47239005996. Its totient is φ = 15743013072.

The previous prime is 31489348399. The next prime is 31489348403. The reversal of 31489348402 is 20484398413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31442027761 + 47320641 = 177319^2 + 6879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31489348403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806733 + ... + 844864.

Almost surely, 2^31489348402 is an apocalyptic number.

31489348402 is a deficient number, since it is larger than the sum of its proper divisors (15749657594).

31489348402 is a wasteful number, since it uses less digits than its factorization.

31489348402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661132.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 31489348402 in words is "thirty-one billion, four hundred eighty-nine million, three hundred forty-eight thousand, four hundred two".