238721723387 has 8 divisors (see below), whose sum is σ = 272851481856. Its totient is φ = 204598628712.

The previous prime is 238721723381. The next prime is 238721723407. The reversal of 238721723387 is 783327127832.

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

It is a cyclic number.

It is not a de Polignac number, because 238721723387 - 2⁴ = 238721723371 is a prime.

It is a super-2 number, since 2×238721723387² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238721723381) 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, 1588943 + ... + 1732680.

It is an arithmetic number, because the mean of its divisors is an integer number (34106435232).

Almost surely, 2^238721723387 is an apocalyptic number.

238721723387 is a deficient number, since it is larger than the sum of its proper divisors (34129758469).

238721723387 is a wasteful number, since it uses less digits than its factorization.

238721723387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331897.

The product of its digits is 4741632, while the sum is 53.

The spelling of 238721723387 in words is "two hundred thirty-eight billion, seven hundred twenty-one million, seven hundred twenty-three thousand, three hundred eighty-seven".