31147119 has 8 divisors (see below), whose sum is σ = 46143920. Its totient is φ = 20764728.

The previous prime is 31147091. The next prime is 31147133. The reversal of 31147119 is 91174113.

It is not a de Polignac number, because 31147119 - 2⁹ = 31146607 is a prime.

It is a super-2 number, since 2×31147119² = 1940286044000322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1153597 = 31147119 / (3 + 1 + 1 + 4 + 7 + 1 + 1 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31147092 and 31147101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31147139) 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, 576772 + ... + 576825.

It is an arithmetic number, because the mean of its divisors is an integer number (5767990).

Almost surely, 2^31147119 is an apocalyptic number.

31147119 is a deficient number, since it is larger than the sum of its proper divisors (14996801).

31147119 is a wasteful number, since it uses less digits than its factorization.

31147119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153606 (or 1153600 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 31147119 is about 5580.9604012213. The cubic root of 31147119 is about 314.6342239536.

The spelling of 31147119 in words is "thirty-one million, one hundred forty-seven thousand, one hundred nineteen".