238406997213 has 24 divisors (see below), whose sum is σ = 429339009216. Its totient is φ = 123847790400.

The previous prime is 238406997107. The next prime is 238406997247. The reversal of 238406997213 is 312799604832.

It is not a de Polignac number, because 238406997213 - 2⁸ = 238406996957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238406997213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238406997253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172010128 + ... + 172011513.

It is an arithmetic number, because the mean of its divisors is an integer number (17889125384).

Almost surely, 2^238406997213 is an apocalyptic number.

It is an amenable number.

238406997213 is a deficient number, since it is larger than the sum of its proper divisors (190932012003).

238406997213 is a wasteful number, since it uses less digits than its factorization.

238406997213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344021665 (or 344021662 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 238406997213 in words is "two hundred thirty-eight billion, four hundred six million, nine hundred ninety-seven thousand, two hundred thirteen".