213031779875 has 8 divisors (see below), whose sum is σ = 265863661440. Its totient is φ = 170425423800.

The previous prime is 213031779797. The next prime is 213031779881. The reversal of 213031779875 is 578977130312.

It is not a de Polignac number, because 213031779875 - 2³⁴ = 195851910691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852126995 + ... + 852127244.

It is an arithmetic number, because the mean of its divisors is an integer number (33232957680).

Almost surely, 2^213031779875 is an apocalyptic number.

213031779875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213031779875 is a deficient number, since it is larger than the sum of its proper divisors (52831881565).

213031779875 is an equidigital number, since it uses as much as digits as its factorization.

213031779875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704254254 (or 1704254244 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 213031779875 in words is "two hundred thirteen billion, thirty-one million, seven hundred seventy-nine thousand, eight hundred seventy-five".