31001133132 has 48 divisors (see below), whose sum is σ = 80407565280. Its totient is φ = 10329306624.

The previous prime is 31001133113. The next prime is 31001133157. The reversal of 31001133132 is 23133110013.

It is a happy number.

It is a super-2 number, since 2×31001133132² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 15 ways as a sum of consecutive naturals, for example, 198468 + ... + 318420.

It is an arithmetic number, because the mean of its divisors is an integer number (1675157610).

Almost surely, 2^31001133132 is an apocalyptic number.

It is an amenable number.

31001133132 is an abundant number, since it is smaller than the sum of its proper divisors (49406432148).

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

31001133132 is a wasteful number, since it uses less digits than its factorization.

31001133132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122359 (or 122351 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31001133132 its reverse (23133110013), we get a palindrome (54134243145).

The spelling of 31001133132 in words is "thirty-one billion, one million, one hundred thirty-three thousand, one hundred thirty-two".