31421362252 has 48 divisors (see below), whose sum is σ = 67137629440. Its totient is φ = 12567120192.

The previous prime is 31421362243. The next prime is 31421362253. The reversal of 31421362252 is 25226312413.

It is not an unprimeable number, because it can be changed into a prime (31421362253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405123 + ... + 476410.

Almost surely, 2^31421362252 is an apocalyptic number.

It is an amenable number.

31421362252 is an abundant number, since it is smaller than the sum of its proper divisors (35716267188).

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

31421362252 is a wasteful number, since it uses less digits than its factorization.

31421362252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881630 (or 881628 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

Adding to 31421362252 its reverse (25226312413), we get a palindrome (56647674665).

The spelling of 31421362252 in words is "thirty-one billion, four hundred twenty-one million, three hundred sixty-two thousand, two hundred fifty-two".