31012011232 has 48 divisors (see below), whose sum is σ = 61739012160. Its totient is φ = 15332548608.

The previous prime is 31012011227. The next prime is 31012011253. The reversal of 31012011232 is 23211021013.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 4115244 + ... + 4122772.

It is an arithmetic number, because the mean of its divisors is an integer number (1286229420).

Almost surely, 2^31012011232 is an apocalyptic number.

31012011232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31012011232 is a deficient number, since it is larger than the sum of its proper divisors (30727000928).

31012011232 is a wasteful number, since it uses less digits than its factorization.

31012011232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963 (or 8955 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31012011232 its reverse (23211021013), we get a palindrome (54223032245).

The spelling of 31012011232 in words is "thirty-one billion, twelve million, eleven thousand, two hundred thirty-two".