31421103532 has 24 divisors (see below), whose sum is σ = 67676223776. Its totient is φ = 12430326528.

The previous prime is 31421103509. The next prime is 31421103601. The reversal of 31421103532 is 23530112413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31421103497 and 31421103506.

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, 43160493 + ... + 43161220.

Almost surely, 2^31421103532 is an apocalyptic number.

It is an amenable number.

31421103532 is an abundant number, since it is smaller than the sum of its proper divisors (36255120244).

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

31421103532 is a wasteful number, since it uses less digits than its factorization.

31421103532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86321737 (or 86321735 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31421103532 its reverse (23530112413), we get a palindrome (54951215945).

The spelling of 31421103532 in words is "thirty-one billion, four hundred twenty-one million, one hundred three thousand, five hundred thirty-two".