818053431 has 32 divisors (see below), whose sum is σ = 1218006720. Its totient is φ = 484915200.

The previous prime is 818053429. The next prime is 818053433. The reversal of 818053431 is 134350818.

It is an interprime number because it is at equal distance from previous prime (818053429) and next prime (818053433).

It is not a de Polignac number, because 818053431 - 2¹ = 818053429 is a prime.

It is a super-2 number, since 2×818053431² = 1338422831941743522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 818053392 and 818053401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818053433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 928111 + ... + 928991.

It is an arithmetic number, because the mean of its divisors is an integer number (38062710).

Almost surely, 2^818053431 is an apocalyptic number.

818053431 is a deficient number, since it is larger than the sum of its proper divisors (399953289).

818053431 is a wasteful number, since it uses less digits than its factorization.

818053431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 818053431 is about 28601.6333624498. The cubic root of 818053431 is about 935.2489375005.

The spelling of 818053431 in words is "eight hundred eighteen million, fifty-three thousand, four hundred thirty-one".