846400031 has 4 divisors (see below), whose sum is σ = 851791272. Its totient is φ = 841008792.

The previous prime is 846400021. The next prime is 846400043. The reversal of 846400031 is 130004648.

846400031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 846400031 - 2²⁶ = 779291167 is a prime.

It is a super-2 number, since 2×846400031² = 1432786024953601922, which 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 (846400021) 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, 2695385 + ... + 2695698.

It is an arithmetic number, because the mean of its divisors is an integer number (212947818).

Almost surely, 2^846400031 is an apocalyptic number.

846400031 is a deficient number, since it is larger than the sum of its proper divisors (5391241).

846400031 is a wasteful number, since it uses less digits than its factorization.

846400031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391240.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 846400031 is about 29092.9550063241. The cubic root of 846400031 is about 945.9290364342.

Adding to 846400031 its reverse (130004648), we get a palindrome (976404679).

The spelling of 846400031 in words is "eight hundred forty-six million, four hundred thousand, thirty-one".