31000001202 has 48 divisors (see below), whose sum is σ = 67582045440. Its totient is φ = 10269604800.

The previous prime is 31000001189. The next prime is 31000001213. The reversal of 31000001202 is 20210000013.

It is a happy number.

It is a super-2 number, since 2×31000001202² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2234427 + ... + 2248257.

It is an arithmetic number, because the mean of its divisors is an integer number (1407959280).

Almost surely, 2^31000001202 is an apocalyptic number.

31000001202 is an abundant number, since it is smaller than the sum of its proper divisors (36582044238).

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

31000001202 is a wasteful number, since it uses less digits than its factorization.

31000001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14599 (or 14596 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 31000001202 its reverse (20210000013), we get a palindrome (51210001215).

The spelling of 31000001202 in words is "thirty-one billion, one thousand, two hundred two".