231454355320 has 64 divisors (see below), whose sum is σ = 543753311040. Its totient is φ = 88501248000.

The previous prime is 231454355291. The next prime is 231454355351. The reversal of 231454355320 is 23553454132.

It is a super-2 number, since 2×231454355320² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231454355320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413720 + ... + 1568920.

It is an arithmetic number, because the mean of its divisors is an integer number (8496145485).

Almost surely, 2^231454355320 is an apocalyptic number.

231454355320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231454355320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271876655520).

231454355320 is an abundant number, since it is smaller than the sum of its proper divisors (312298955720).

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

231454355320 is a wasteful number, since it uses less digits than its factorization.

231454355320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156856 (or 156852 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 231454355320 in words is "two hundred thirty-one billion, four hundred fifty-four million, three hundred fifty-five thousand, three hundred twenty".