31314623 has 4 divisors (see below), whose sum is σ = 31370808. Its totient is φ = 31258440.

The previous prime is 31314599. The next prime is 31314649. The reversal of 31314623 is 32641313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31314623 - 2¹⁰ = 31313599 is a prime.

It is a super-2 number, since 2×31314623² = 1961211227264258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31314653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27248 + ... + 28373.

It is an arithmetic number, because the mean of its divisors is an integer number (7842702).

Almost surely, 2^31314623 is an apocalyptic number.

31314623 is a deficient number, since it is larger than the sum of its proper divisors (56185).

31314623 is an equidigital number, since it uses as much as digits as its factorization.

31314623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56184.

The product of its digits is 1296, while the sum is 23.

The square root of 31314623 is about 5595.9470154747. The cubic root of 31314623 is about 315.1972326569.

Adding to 31314623 its reverse (32641313), we get a palindrome (63955936).

The spelling of 31314623 in words is "thirty-one million, three hundred fourteen thousand, six hundred twenty-three".