231455449071940 has 96 divisors (see below), whose sum is σ = 499878115720704. Its totient is φ = 89956432581120.

The previous prime is 231455449071841. The next prime is 231455449072021. The reversal of 231455449071940 is 49170944554132.

It is a super-3 number, since 3×231455449071940³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1596094917 + ... + 1596239923.

It is an arithmetic number, because the mean of its divisors is an integer number (5207063705424).

Almost surely, 2^{231455449071940} is an apocalyptic number.

231455449071940 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 231455449071940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249939057860352).

231455449071940 is an abundant number, since it is smaller than the sum of its proper divisors (268422666648764).

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

231455449071940 is a wasteful number, since it uses less digits than its factorization.

231455449071940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147997 (or 147995 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 231455449071940 in words is "two hundred thirty-one trillion, four hundred fifty-five billion, four hundred forty-nine million, seventy-one thousand, nine hundred forty".