31002240213 has 32 divisors (see below), whose sum is σ = 55578251520. Its totient is φ = 16673472000.

The previous prime is 31002240197. The next prime is 31002240239. The reversal of 31002240213 is 31204220013.

It is not a de Polignac number, because 31002240213 - 2⁴ = 31002240197 is a prime.

It is a super-2 number, since 2×31002240213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002240413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4821288 + ... + 4827713.

It is an arithmetic number, because the mean of its divisors is an integer number (1736820360).

Almost surely, 2^31002240213 is an apocalyptic number.

It is an amenable number.

31002240213 is a deficient number, since it is larger than the sum of its proper divisors (24576011307).

31002240213 is a wasteful number, since it uses less digits than its factorization.

31002240213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649034 (or 9649028 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31002240213 its reverse (31204220013), we get a palindrome (62206460226).

The spelling of 31002240213 in words is "thirty-one billion, two million, two hundred forty thousand, two hundred thirteen".