31742023 has 2 divisors, whose sum is σ = 31742024. Its totient is φ = 31742022.

The previous prime is 31742017. The next prime is 31742083. The reversal of 31742023 is 32024713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31742023 - 2²¹ = 29644871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31741985 and 31742003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31742083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15871011 + 15871012.

It is an arithmetic number, because the mean of its divisors is an integer number (15871012).

Almost surely, 2^31742023 is an apocalyptic number.

31742023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31742023 is an equidigital number, since it uses as much as digits as its factorization.

31742023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 31742023 is about 5634.0059460388. The cubic root of 31742023 is about 316.6247554258.

Adding to 31742023 its reverse (32024713), we get a palindrome (63766736).

The spelling of 31742023 in words is "thirty-one million, seven hundred forty-two thousand, twenty-three".