31012033120 has 48 divisors (see below), whose sum is σ = 74507746320. Its totient is φ = 12194558464.

The previous prime is 31012033103. The next prime is 31012033121. The reversal of 31012033120 is 2133021013.

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

It is a junction number, because it is equal to n+sod(n) for n = 31012033094 and 31012033103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012033121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633147 + ... + 1652026.

It is an arithmetic number, because the mean of its divisors is an integer number (1552244715).

Almost surely, 2^31012033120 is an apocalyptic number.

It is an amenable number.

31012033120 is an abundant number, since it is smaller than the sum of its proper divisors (43495713200).

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

31012033120 is a wasteful number, since it uses less digits than its factorization.

31012033120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285247 (or 3285239 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31012033120 its reverse (2133021013), we get a palindrome (33145054133).

The spelling of 31012033120 in words is "thirty-one billion, twelve million, thirty-three thousand, one hundred twenty".