31201130132 has 18 divisors (see below), whose sum is σ = 58002795102. Its totient is φ = 14682884224.

The previous prime is 31201130101. The next prime is 31201130137. The reversal of 31201130132 is 23103110213.

It can be written as a sum of positive squares in 3 ways, for example, as 4489804036 + 26711326096 = 67006^2 + 163436^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 31201130132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201130137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13494143 + ... + 13496454.

Almost surely, 2^31201130132 is an apocalyptic number.

It is an amenable number.

31201130132 is a deficient number, since it is larger than the sum of its proper divisors (26801664970).

31201130132 is a wasteful number, since it uses less digits than its factorization.

31201130132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26990635 (or 26990616 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31201130132 its reverse (23103110213), we get a palindrome (54304240345).

The spelling of 31201130132 in words is "thirty-one billion, two hundred one million, one hundred thirty thousand, one hundred thirty-two".