231532155355347 has 64 divisors (see below), whose sum is σ = 427682932638720. Its totient is φ = 120267063878400.

The previous prime is 231532155355343. The next prime is 231532155355387. The reversal of 231532155355347 is 743553551235132.

It is a happy number.

231532155355347 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 3 + 2 + 1 + 553 + 55 + 34 + 7 = 666.

It is not a de Polignac number, because 231532155355347 - 2² = 231532155355343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231532155355293 and 231532155355302.

It is not an unprimeable number, because it can be changed into a prime (231532155355343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22360053 + ... + 31032825.

It is an arithmetic number, because the mean of its divisors is an integer number (6682545822480).

Almost surely, 2^{231532155355347} is an apocalyptic number.

231532155355347 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

231532155355347 is a deficient number, since it is larger than the sum of its proper divisors (196150777283373).

231532155355347 is a wasteful number, since it uses less digits than its factorization.

231532155355347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685641 (or 8685635 counting only the distinct ones).

The product of its digits is 28350000, while the sum is 54.

The spelling of 231532155355347 in words is "two hundred thirty-one trillion, five hundred thirty-two billion, one hundred fifty-five million, three hundred fifty-five thousand, three hundred forty-seven".