31149135 has 24 divisors (see below), whose sum is σ = 55311984. Its totient is φ = 16206720.

The previous prime is 31149133. The next prime is 31149143. The reversal of 31149135 is 53194113.

It is not a de Polignac number, because 31149135 - 2¹ = 31149133 is a prime.

It is a super-2 number, since 2×31149135² = 1940537222496450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31149099 and 31149108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31149133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6597 + ... + 10286.

It is an arithmetic number, because the mean of its divisors is an integer number (2304666).

Almost surely, 2^31149135 is an apocalyptic number.

31149135 is a deficient number, since it is larger than the sum of its proper divisors (24162849).

31149135 is a wasteful number, since it uses less digits than its factorization.

31149135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16935 (or 16932 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 31149135 is about 5581.1410123737. The cubic root of 31149135 is about 314.6410120497.

The spelling of 31149135 in words is "thirty-one million, one hundred forty-nine thousand, one hundred thirty-five".