231454961340 has 24 divisors (see below), whose sum is σ = 648073891920. Its totient is φ = 61721323008.

The previous prime is 231454961329. The next prime is 231454961371. The reversal of 231454961340 is 43169454132.

It is a junction number, because it is equal to n+sod(n) for n = 231454961292 and 231454961301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928791285 + ... + 1928791404.

It is an arithmetic number, because the mean of its divisors is an integer number (27003078830).

Almost surely, 2^231454961340 is an apocalyptic number.

231454961340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231454961340 is an abundant number, since it is smaller than the sum of its proper divisors (416618930580).

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

231454961340 is a wasteful number, since it uses less digits than its factorization.

231454961340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857582701 (or 3857582699 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 231454961340 in words is "two hundred thirty-one billion, four hundred fifty-four million, nine hundred sixty-one thousand, three hundred forty".