31444401402 has 12 divisors (see below), whose sum is σ = 68129536410. Its totient is φ = 10481467128.

The previous prime is 31444401383. The next prime is 31444401421. The reversal of 31444401402 is 20410444413.

It is an interprime number because it is at equal distance from previous prime (31444401383) and next prime (31444401421).

It can be written as a sum of positive squares in only one way, i.e., 26813735001 + 4630666401 = 163749^2 + 68049^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 873455577 + ... + 873455612.

Almost surely, 2^31444401402 is an apocalyptic number.

31444401402 is an abundant number, since it is smaller than the sum of its proper divisors (36685135008).

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

31444401402 is a wasteful number, since it uses less digits than its factorization.

31444401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746911197 (or 1746911194 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 31444401402 its reverse (20410444413), we get a palindrome (51854845815).

The spelling of 31444401402 in words is "thirty-one billion, four hundred forty-four million, four hundred one thousand, four hundred two".