109312157238 has 16 divisors (see below), whose sum is σ = 218633834496. Its totient is φ = 36435799080.

The previous prime is 109312157231. The next prime is 109312157239. The reversal of 109312157238 is 832751213901.

It is a self number, because there is not a number n which added to its sum of digits gives 109312157238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109312157231) 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, 242806 + ... + 526857.

It is an arithmetic number, because the mean of its divisors is an integer number (13664614656).

Almost surely, 2^109312157238 is an apocalyptic number.

109312157238 is an abundant number, since it is smaller than the sum of its proper divisors (109321677258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109312157238 is a wasteful number, since it uses less digits than its factorization.

109312157238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793339.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 109312157238 in words is "one hundred nine billion, three hundred twelve million, one hundred fifty-seven thousand, two hundred thirty-eight".