238747860431 has 2 divisors, whose sum is σ = 238747860432. Its totient is φ = 238747860430.

The previous prime is 238747860401. The next prime is 238747860433. The reversal of 238747860431 is 134068747832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238747860431 is a prime.

It is a super-3 number, since 3×238747860431³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 238747860433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238747860433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119373930215 + 119373930216.

It is an arithmetic number, because the mean of its divisors is an integer number (119373930216).

Almost surely, 2^238747860431 is an apocalyptic number.

238747860431 is a deficient number, since it is larger than the sum of its proper divisors (1).

238747860431 is an equidigital number, since it uses as much as digits as its factorization.

238747860431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 238747860431 in words is "two hundred thirty-eight billion, seven hundred forty-seven million, eight hundred sixty thousand, four hundred thirty-one".