31270423 has 2 divisors, whose sum is σ = 31270424. Its totient is φ = 31270422.

The previous prime is 31270399. The next prime is 31270433. The reversal of 31270423 is 32407213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31270423 - 2⁵ = 31270391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31270394 and 31270403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31270433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15635211 + 15635212.

It is an arithmetic number, because the mean of its divisors is an integer number (15635212).

Almost surely, 2^31270423 is an apocalyptic number.

31270423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31270423 is an equidigital number, since it uses as much as digits as its factorization.

31270423 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 31270423 is about 5591.9963340474. The cubic root of 31270423 is about 315.0488645115.

Adding to 31270423 its reverse (32407213), we get a palindrome (63677636).

The spelling of 31270423 in words is "thirty-one million, two hundred seventy thousand, four hundred twenty-three".