31012001072 has 40 divisors (see below), whose sum is σ = 64848297360. Its totient is φ = 14282138880.

The previous prime is 31012001071. The next prime is 31012001081. The reversal of 31012001072 is 27010021013.

It is a self number, because there is not a number n which added to its sum of digits gives 31012001072.

It is not an unprimeable number, because it can be changed into a prime (31012001071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 65822 + ... + 257597.

It is an arithmetic number, because the mean of its divisors is an integer number (1621207434).

Almost surely, 2^31012001072 is an apocalyptic number.

It is an amenable number.

31012001072 is an abundant number, since it is smaller than the sum of its proper divisors (33836296288).

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

31012001072 is a wasteful number, since it uses less digits than its factorization.

31012001072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323901 (or 323895 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

Adding to 31012001072 its reverse (27010021013), we get a palindrome (58022022085).

The spelling of 31012001072 in words is "thirty-one billion, twelve million, one thousand, seventy-two".