31323107 has 2 divisors, whose sum is σ = 31323108. Its totient is φ = 31323106.

The previous prime is 31323023. The next prime is 31323133. The reversal of 31323107 is 70132313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31323107 - 2²⁴ = 14545891 is a prime.

It is a super-2 number, since 2×31323107² = 1962274064266898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31373107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661553 + 15661554.

It is an arithmetic number, because the mean of its divisors is an integer number (15661554).

Almost surely, 2^31323107 is an apocalyptic number.

31323107 is a deficient number, since it is larger than the sum of its proper divisors (1).

31323107 is an equidigital number, since it uses as much as digits as its factorization.

31323107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 31323107 is about 5596.7050127731. The cubic root of 31323107 is about 315.2256953111.

The spelling of 31323107 in words is "thirty-one million, three hundred twenty-three thousand, one hundred seven".