371800013 has 32 divisors (see below), whose sum is σ = 446433120. Its totient is φ = 306339840.

The previous prime is 371800003. The next prime is 371800031. The reversal of 371800013 is 310008173.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 200137609 + 171662404 = 14147^2 + 13102^2 .

It is a cyclic number.

It is not a de Polignac number, because 371800013 - 2⁴ = 371799997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (371800003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334703 + ... + 335811.

It is an arithmetic number, because the mean of its divisors is an integer number (13951035).

Almost surely, 2^371800013 is an apocalyptic number.

It is an amenable number.

371800013 is a deficient number, since it is larger than the sum of its proper divisors (74633107).

371800013 is a wasteful number, since it uses less digits than its factorization.

371800013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 371800013 is about 19282.1164035487. The cubic root of 371800013 is about 719.0677318046.

Adding to 371800013 its reverse (310008173), we get a palindrome (681808186).

The spelling of 371800013 in words is "three hundred seventy-one million, eight hundred thousand, thirteen".