31133012002 has 16 divisors (see below), whose sum is σ = 48316159800. Its totient is φ = 15027765760.

The previous prime is 31133011993. The next prime is 31133012021. The reversal of 31133012002 is 20021033113.

It can be written as a sum of positive squares in 4 ways, for example, as 29371447161 + 1761564841 = 171381^2 + 41971^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476274 + ... + 537682.

Almost surely, 2^31133012002 is an apocalyptic number.

31133012002 is a deficient number, since it is larger than the sum of its proper divisors (17183147798).

31133012002 is a wasteful number, since it uses less digits than its factorization.

31133012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70181.

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

Adding to 31133012002 its reverse (20021033113), we get a palindrome (51154045115).

The spelling of 31133012002 in words is "thirty-one billion, one hundred thirty-three million, twelve thousand, two".