237531216413 has 4 divisors (see below), whose sum is σ = 237550903068. Its totient is φ = 237511529760.

The previous prime is 237531216383. The next prime is 237531216431. The reversal of 237531216413 is 314612135732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10461812089 + 227069404324 = 102283^2 + 476518^2 .

It is a cyclic number.

It is not a de Polignac number, because 237531216413 - 2⁸ = 237531216157 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 (237531215413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9825218 + ... + 9849363.

It is an arithmetic number, because the mean of its divisors is an integer number (59387725767).

Almost surely, 2^237531216413 is an apocalyptic number.

It is an amenable number.

237531216413 is a deficient number, since it is larger than the sum of its proper divisors (19686655).

237531216413 is a wasteful number, since it uses less digits than its factorization.

237531216413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19686654.

The product of its digits is 90720, while the sum is 38.

The spelling of 237531216413 in words is "two hundred thirty-seven billion, five hundred thirty-one million, two hundred sixteen thousand, four hundred thirteen".