31220002132 has 96 divisors (see below), whose sum is σ = 62105387904. Its totient is φ = 13610688000.

The previous prime is 31220002129. The next prime is 31220002181. The reversal of 31220002132 is 23120002213.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 19548358 + ... + 19549954.

It is an arithmetic number, because the mean of its divisors is an integer number (646931124).

Almost surely, 2^31220002132 is an apocalyptic number.

It is an amenable number.

31220002132 is a deficient number, since it is larger than the sum of its proper divisors (30885385772).

31220002132 is a wasteful number, since it uses less digits than its factorization.

31220002132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31220002132 its reverse (23120002213), we get a palindrome (54340004345).

The spelling of 31220002132 in words is "thirty-one billion, two hundred twenty million, two thousand, one hundred thirty-two".