31002020132 has 12 divisors (see below), whose sum is σ = 55719847260. Its totient is φ = 15082063776.

The previous prime is 31002020129. The next prime is 31002020213. The reversal of 31002020132 is 23102020013.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28323543616 + 2678476516 = 168296^2 + 51754^2 .

It is a super-2 number, since 2×31002020132² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104736407 + ... + 104736702.

It is an arithmetic number, because the mean of its divisors is an integer number (4643320605).

Almost surely, 2^31002020132 is an apocalyptic number.

It is an amenable number.

31002020132 is a deficient number, since it is larger than the sum of its proper divisors (24717827128).

31002020132 is a wasteful number, since it uses less digits than its factorization.

31002020132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209473150 (or 209473148 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31002020132 its reverse (23102020013), we get a palindrome (54104040145).

The spelling of 31002020132 in words is "thirty-one billion, two million, twenty thousand, one hundred thirty-two".