31311203132 has 48 divisors (see below), whose sum is σ = 60795629664. Its totient is φ = 13989888000.

The previous prime is 31311203129. The next prime is 31311203167. The reversal of 31311203132 is 23130211313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5668532 + ... + 5674052.

It is an arithmetic number, because the mean of its divisors is an integer number (1266575618).

Almost surely, 2^31311203132 is an apocalyptic number.

It is an amenable number.

31311203132 is a deficient number, since it is larger than the sum of its proper divisors (29484426532).

31311203132 is a wasteful number, since it uses less digits than its factorization.

31311203132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710 (or 7708 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31311203132 its reverse (23130211313), we get a palindrome (54441414445).

The spelling of 31311203132 in words is "thirty-one billion, three hundred eleven million, two hundred three thousand, one hundred thirty-two".