31662023 has 2 divisors, whose sum is σ = 31662024. Its totient is φ = 31662022.

The previous prime is 31662019. The next prime is 31662073. The reversal of 31662023 is 32026613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31662023 - 2² = 31662019 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 31662023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31662013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15831011 + 15831012.

It is an arithmetic number, because the mean of its divisors is an integer number (15831012).

Almost surely, 2^31662023 is an apocalyptic number.

31662023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31662023 is an equidigital number, since it uses as much as digits as its factorization.

31662023 is an evil number, because the sum of its binary digits is even.

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

The square root of 31662023 is about 5626.9017229733. The cubic root of 31662023 is about 316.3585332619.

Adding to 31662023 its reverse (32026613), we get a palindrome (63688636).

The spelling of 31662023 in words is "thirty-one million, six hundred sixty-two thousand, twenty-three".