194123314231 has 72 divisors (see below), whose sum is σ = 256712182272. Its totient is φ = 143417234400.

The previous prime is 194123314219. The next prime is 194123314351. The reversal of 194123314231 is 132413321491.

It is not a de Polignac number, because 194123314231 - 2⁵ = 194123314199 is a prime.

It is a super-2 number, since 2×194123314231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194123314201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 624190566 + ... + 624190876.

It is an arithmetic number, because the mean of its divisors is an integer number (3565446976).

Almost surely, 2^194123314231 is an apocalyptic number.

194123314231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

194123314231 is a deficient number, since it is larger than the sum of its proper divisors (62588868041).

194123314231 is a wasteful number, since it uses less digits than its factorization.

194123314231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 531 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The spelling of 194123314231 in words is "one hundred ninety-four billion, one hundred twenty-three million, three hundred fourteen thousand, two hundred thirty-one".