1055694431 has 4 divisors (see below), whose sum is σ = 1151666664. Its totient is φ = 959722200.

The previous prime is 1055694413. The next prime is 1055694433. The reversal of 1055694431 is 1344965501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344965501 = 11 ⋅122269591.

It is a cyclic number.

It is not a de Polignac number, because 1055694431 - 2¹⁰ = 1055693407 is a prime.

It is a super-2 number, since 2×1055694431² = 2228981463288827522, 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 (1055694433) 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, 47986100 + ... + 47986121.

It is an arithmetic number, because the mean of its divisors is an integer number (287916666).

Almost surely, 2^1055694431 is an apocalyptic number.

1055694431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1055694431 is a deficient number, since it is larger than the sum of its proper divisors (95972233).

1055694431 is an equidigital number, since it uses as much as digits as its factorization.

1055694431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95972232.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1055694431 is about 32491.4516603983. The cubic root of 1055694431 is about 1018.2304417055.

The spelling of 1055694431 in words is "one billion, fifty-five million, six hundred ninety-four thousand, four hundred thirty-one".