31320230132 has 48 divisors (see below), whose sum is σ = 56508399360. Its totient is φ = 15180211200.

The previous prime is 31320230131. The next prime is 31320230141. The reversal of 31320230132 is 23103202313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320230131) 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, 34531223 + ... + 34532129.

It is an arithmetic number, because the mean of its divisors is an integer number (1177258320).

Almost surely, 2^31320230132 is an apocalyptic number.

It is an amenable number.

31320230132 is a deficient number, since it is larger than the sum of its proper divisors (25188169228).

31320230132 is a wasteful number, since it uses less digits than its factorization.

31320230132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31320230132 its reverse (23103202313), we get a palindrome (54423432445).

The spelling of 31320230132 in words is "thirty-one billion, three hundred twenty million, two hundred thirty thousand, one hundred thirty-two".