31214423 has 2 divisors, whose sum is σ = 31214424. Its totient is φ = 31214422.

The previous prime is 31214419. The next prime is 31214437. The reversal of 31214423 is 32441213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31214423 - 2² = 31214419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31214395 and 31214404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31214483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15607211 + 15607212.

It is an arithmetic number, because the mean of its divisors is an integer number (15607212).

Almost surely, 2^31214423 is an apocalyptic number.

31214423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31214423 is an equidigital number, since it uses as much as digits as its factorization.

31214423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 20.

The square root of 31214423 is about 5586.9869339385. The cubic root of 31214423 is about 314.8606858545.

Adding to 31214423 its reverse (32441213), we get a palindrome (63655636).

The spelling of 31214423 in words is "thirty-one million, two hundred fourteen thousand, four hundred twenty-three".