31131011102002 has 32 divisors (see below), whose sum is σ = 53651888345088. Its totient is φ = 13270785909696.

The previous prime is 31131011101913. The next prime is 31131011102071. The reversal of 31131011102002 is 20020111013113.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9518308 + ... + 12363664.

It is an arithmetic number, because the mean of its divisors is an integer number (1676621510784).

Almost surely, 2^{31131011102002} is an apocalyptic number.

31131011102002 is a deficient number, since it is larger than the sum of its proper divisors (22520877243086).

31131011102002 is a wasteful number, since it uses less digits than its factorization.

31131011102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849530.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31131011102002 its reverse (20020111013113), we get a palindrome (51151122115115).

The spelling of 31131011102002 in words is "thirty-one trillion, one hundred thirty-one billion, eleven million, one hundred two thousand, two".