1055193931 has 12 divisors (see below), whose sum is σ = 1210272336. Its totient is φ = 917557520.

The previous prime is 1055193929. The next prime is 1055193947. The reversal of 1055193931 is 1393915501.

It is not a de Polignac number, because 1055193931 - 2¹ = 1055193929 is a prime.

It is a super-2 number, since 2×1055193931² = 2226868464038465522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055193911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186796 + ... + 192361.

It is an arithmetic number, because the mean of its divisors is an integer number (100856028).

Almost surely, 2^1055193931 is an apocalyptic number.

1055193931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1055193931 is a deficient number, since it is larger than the sum of its proper divisors (155078405).

1055193931 is a wasteful number, since it uses less digits than its factorization.

1055193931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379202 (or 379191 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 37.

The square root of 1055193931 is about 32483.7487214761. The cubic root of 1055193931 is about 1018.0695034393.

The spelling of 1055193931 in words is "one billion, fifty-five million, one hundred ninety-three thousand, nine hundred thirty-one".