31514423 has 2 divisors, whose sum is σ = 31514424. Its totient is φ = 31514422.

The previous prime is 31514419. The next prime is 31514429. The reversal of 31514423 is 32441513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31514423 - 2² = 31514419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31514429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15757211 + 15757212.

It is an arithmetic number, because the mean of its divisors is an integer number (15757212).

Almost surely, 2^31514423 is an apocalyptic number.

31514423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31514423 is an equidigital number, since it uses as much as digits as its factorization.

31514423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 31514423 is about 5613.7708360780. The cubic root of 31514423 is about 315.8661740383.

Adding to 31514423 its reverse (32441513), we get a palindrome (63955936).

The spelling of 31514423 in words is "thirty-one million, five hundred fourteen thousand, four hundred twenty-three".