31012223132 has 24 divisors (see below), whose sum is σ = 59216572800. Its totient is φ = 14093746160.

The previous prime is 31012223093. The next prime is 31012223183. The reversal of 31012223132 is 23132221013.

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 7 ways as a sum of consecutive naturals, for example, 172283 + ... + 302829.

It is an arithmetic number, because the mean of its divisors is an integer number (2467357200).

Almost surely, 2^31012223132 is an apocalyptic number.

It is an amenable number.

31012223132 is a deficient number, since it is larger than the sum of its proper divisors (28204349668).

31012223132 is a wasteful number, since it uses less digits than its factorization.

31012223132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135961 (or 135959 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31012223132 its reverse (23132221013), we get a palindrome (54144444145).

The spelling of 31012223132 in words is "thirty-one billion, twelve million, two hundred twenty-three thousand, one hundred thirty-two".