31266113 has 2 divisors, whose sum is σ = 31266114. Its totient is φ = 31266112.

The previous prime is 31266101. The next prime is 31266133. The reversal of 31266113 is 31166213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30780304 + 485809 = 5548^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 31266113 - 2¹⁶ = 31200577 is a prime.

It is not a weakly prime, because it can be changed into another prime (31266133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15633056 + 15633057.

It is an arithmetic number, because the mean of its divisors is an integer number (15633057).

Almost surely, 2^31266113 is an apocalyptic number.

It is an amenable number.

31266113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31266113 is an equidigital number, since it uses as much as digits as its factorization.

31266113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 31266113 is about 5591.6109485550. The cubic root of 31266113 is about 315.0343894595.

The spelling of 31266113 in words is "thirty-one million, two hundred sixty-six thousand, one hundred thirteen".