231418630989 has 128 divisors (see below), whose sum is σ = 429732495360. Its totient is φ = 119826604800.

The previous prime is 231418630967. The next prime is 231418631021. The reversal of 231418630989 is 989036814132.

231418630989 is a `hidden beast` number, since 2 + 314 + 18 + 6 + 309 + 8 + 9 = 666.

It is not a de Polignac number, because 231418630989 - 2¹³ = 231418622797 is a prime.

It is a super-2 number, since 2×231418630989² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231418630889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 94571164 + ... + 94573610.

It is an arithmetic number, because the mean of its divisors is an integer number (3357285120).

Almost surely, 2^231418630989 is an apocalyptic number.

It is an amenable number.

231418630989 is a deficient number, since it is larger than the sum of its proper divisors (198313864371).

231418630989 is a wasteful number, since it uses less digits than its factorization.

231418630989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168 (or 3162 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 231418630989 in words is "two hundred thirty-one billion, four hundred eighteen million, six hundred thirty thousand, nine hundred eighty-nine".