231398479343481 has 32 divisors (see below), whose sum is σ = 316869514389120. Its totient is φ = 150116402649600.

The previous prime is 231398479343461. The next prime is 231398479343489. The reversal of 231398479343481 is 184343974893132.

It is not a de Polignac number, because 231398479343481 - 2³³ = 231389889408889 is a prime.

It is a super-3 number, since 3×231398479343481³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (231398479343489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73193826 + ... + 76289796.

It is an arithmetic number, because the mean of its divisors is an integer number (9902172324660).

Almost surely, 2^{231398479343481} is an apocalyptic number.

It is an amenable number.

231398479343481 is a deficient number, since it is larger than the sum of its proper divisors (85471035045639).

231398479343481 is a wasteful number, since it uses less digits than its factorization.

231398479343481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097577.

The product of its digits is 376233984, while the sum is 69.

The spelling of 231398479343481 in words is "two hundred thirty-one trillion, three hundred ninety-eight billion, four hundred seventy-nine million, three hundred forty-three thousand, four hundred eighty-one".