31295493 has 12 divisors (see below), whose sum is σ = 46058220. Its totient is φ = 20469696.

The previous prime is 31295491. The next prime is 31295497. The reversal of 31295493 is 39459213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25735329 + 5560164 = 5073^2 + 2358^2 .

It is not a de Polignac number, because 31295493 - 2¹ = 31295491 is a prime.

It is a super-2 number, since 2×31295493² = 1958815764226098, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31295491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32328 + ... + 33281.

It is an arithmetic number, because the mean of its divisors is an integer number (3838185).

Almost surely, 2^31295493 is an apocalyptic number.

It is an amenable number.

31295493 is a deficient number, since it is larger than the sum of its proper divisors (14762727).

31295493 is a wasteful number, since it uses less digits than its factorization.

31295493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65668 (or 65665 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 31295493 is about 5594.2374815519. The cubic root of 31295493 is about 315.1330352656.

The spelling of 31295493 in words is "thirty-one million, two hundred ninety-five thousand, four hundred ninety-three".