231215199954 has 16 divisors (see below), whose sum is σ = 470011226880. Its totient is φ = 75808262160.

The previous prime is 231215199949. The next prime is 231215199967. The reversal of 231215199954 is 459991512132.

It is a happy number.

It is a super-3 number, since 3×231215199954³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231215199897 and 231215199906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315867394 + ... + 315868125.

It is an arithmetic number, because the mean of its divisors is an integer number (29375701680).

Almost surely, 2^231215199954 is an apocalyptic number.

231215199954 is an abundant number, since it is smaller than the sum of its proper divisors (238796026926).

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

231215199954 is a wasteful number, since it uses less digits than its factorization.

231215199954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631735585.

The product of its digits is 874800, while the sum is 51.

The spelling of 231215199954 in words is "two hundred thirty-one billion, two hundred fifteen million, one hundred ninety-nine thousand, nine hundred fifty-four".