31200220213 has 8 divisors (see below), whose sum is σ = 31347288000. Its totient is φ = 31053498528.

The previous prime is 31200220189. The next prime is 31200220217. The reversal of 31200220213 is 31202200213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31200220213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200220217) 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, 95088 + ... + 267286.

It is an arithmetic number, because the mean of its divisors is an integer number (3918411000).

Almost surely, 2^31200220213 is an apocalyptic number.

It is an amenable number.

31200220213 is a deficient number, since it is larger than the sum of its proper divisors (147067787).

31200220213 is a wasteful number, since it uses less digits than its factorization.

31200220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173051.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31200220213 its reverse (31202200213), we get a palindrome (62402420426).

The spelling of 31200220213 in words is "thirty-one billion, two hundred million, two hundred twenty thousand, two hundred thirteen".