840992935231 has 4 divisors (see below), whose sum is σ = 842891339592. Its totient is φ = 839094530872.

The previous prime is 840992935199. The next prime is 840992935261. The reversal of 840992935231 is 132539299048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 840992935231 - 2⁵ = 840992935199 is a prime.

It is a super-2 number, since 2×840992935231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840992935261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949201516 + ... + 949202401.

It is an arithmetic number, because the mean of its divisors is an integer number (210722834898).

Almost surely, 2^840992935231 is an apocalyptic number.

840992935231 is a deficient number, since it is larger than the sum of its proper divisors (1898404361).

840992935231 is a wasteful number, since it uses less digits than its factorization.

840992935231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898404360.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 840992935231 in words is "eight hundred forty billion, nine hundred ninety-two million, nine hundred thirty-five thousand, two hundred thirty-one".