31249106 has 16 divisors (see below), whose sum is σ = 53649216. Its totient is φ = 13372656.

The previous prime is 31249103. The next prime is 31249109. The reversal of 31249106 is 60194213.

It is an interprime number because it is at equal distance from previous prime (31249103) and next prime (31249109).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31249103) 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, 12080 + ... + 14436.

It is an arithmetic number, because the mean of its divisors is an integer number (3353076).

Almost surely, 2^31249106 is an apocalyptic number.

31249106 is a deficient number, since it is larger than the sum of its proper divisors (22400110).

31249106 is a wasteful number, since it uses less digits than its factorization.

31249106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 31249106 is about 5590.0899813867. The cubic root of 31249106 is about 314.9772587933.

The spelling of 31249106 in words is "thirty-one million, two hundred forty-nine thousand, one hundred six".