801855431 has 8 divisors (see below), whose sum is σ = 877693824. Its totient is φ = 728039520.

The previous prime is 801855427. The next prime is 801855437. The reversal of 801855431 is 134558108.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 801855431 - 2² = 801855427 is a prime.

It is a super-2 number, since 2×801855431² = 1285944264448391522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 801855391 and 801855400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801855437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504791 + ... + 506376.

It is an arithmetic number, because the mean of its divisors is an integer number (109711728).

Almost surely, 2^801855431 is an apocalyptic number.

801855431 is a deficient number, since it is larger than the sum of its proper divisors (75838393).

801855431 is a wasteful number, since it uses less digits than its factorization.

801855431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011241.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 801855431 is about 28317.0519475457. The cubic root of 801855431 is about 929.0348915857.

The spelling of 801855431 in words is "eight hundred one million, eight hundred fifty-five thousand, four hundred thirty-one".