231005477869838 has 16 divisors (see below), whose sum is σ = 400091961673824. Its totient is φ = 97981704898560.

The previous prime is 231005477869799. The next prime is 231005477869841. The reversal of 231005477869838 is 838968774500132.

It is a congruent number.

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, 85053561923 + ... + 85053564638.

It is an arithmetic number, because the mean of its divisors is an integer number (25005747604614).

It is a 1-persistent number, because it is pandigital, but 2⋅231005477869838 = 462010955739676 is not.

Almost surely, 2^{231005477869838} is an apocalyptic number.

231005477869838 is a deficient number, since it is larger than the sum of its proper divisors (169086483803986).

231005477869838 is a wasteful number, since it uses less digits than its factorization.

231005477869838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170107126667.

The product of its (nonzero) digits is 487710720, while the sum is 71.

The spelling of 231005477869838 in words is "two hundred thirty-one trillion, five billion, four hundred seventy-seven million, eight hundred sixty-nine thousand, eight hundred thirty-eight".