3131020002 has 16 divisors (see below), whose sum is σ = 6831316512. Its totient is φ = 948793920.

The previous prime is 3131020001. The next prime is 3131020049. The reversal of 3131020002 is 2000201313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131020002.

It is not an unprimeable number, because it can be changed into a prime (3131020001) 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, 23719783 + ... + 23719914.

It is an arithmetic number, because the mean of its divisors is an integer number (426957282).

Almost surely, 2^3131020002 is an apocalyptic number.

3131020002 is an abundant number, since it is smaller than the sum of its proper divisors (3700296510).

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

3131020002 is a wasteful number, since it uses less digits than its factorization.

3131020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47439713.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3131020002 is about 55955.5180656921. The cubic root of 3131020002 is about 1462.9470718530.

Adding to 3131020002 its reverse (2000201313), we get a palindrome (5131221315).

The spelling of 3131020002 in words is "three billion, one hundred thirty-one million, twenty thousand, two".