31057119 has 6 divisors (see below), whose sum is σ = 44860296. Its totient is φ = 20704740.

The previous prime is 31057111. The next prime is 31057123. The reversal of 31057119 is 91175013.

It is a happy number.

It is not a de Polignac number, because 31057119 - 2³ = 31057111 is a prime.

It is a super-2 number, since 2×31057119² = 1929089281160322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31057092 and 31057101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31057111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1725387 + ... + 1725404.

It is an arithmetic number, because the mean of its divisors is an integer number (7476716).

Almost surely, 2^31057119 is an apocalyptic number.

31057119 is a deficient number, since it is larger than the sum of its proper divisors (13803177).

31057119 is a wasteful number, since it uses less digits than its factorization.

31057119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450797 (or 3450794 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 31057119 is about 5572.8914398183. The cubic root of 31057119 is about 314.3308850561.

The spelling of 31057119 in words is "thirty-one million, fifty-seven thousand, one hundred nineteen".