31401214220402 has 16 divisors (see below), whose sum is σ = 50729137206552. Its totient is φ = 14491697001600.

The previous prime is 31401214220381. The next prime is 31401214220443. The reversal of 31401214220402 is 20402241210413.

It can be written as a sum of positive squares in 4 ways, for example, as 8051627576521 + 23349586643881 = 2837539^2 + 4832141^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 48467849 + ... + 49111452.

Almost surely, 2^{31401214220402} is an apocalyptic number.

31401214220402 is a deficient number, since it is larger than the sum of its proper divisors (19327922986150).

31401214220402 is a wasteful number, since it uses less digits than its factorization.

31401214220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97591693.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 31401214220402 its reverse (20402241210413), we get a palindrome (51803455430815).

The spelling of 31401214220402 in words is "thirty-one trillion, four hundred one billion, two hundred fourteen million, two hundred twenty thousand, four hundred two".