31148123 has 2 divisors, whose sum is σ = 31148124. Its totient is φ = 31148122.

The previous prime is 31148107. The next prime is 31148137. The reversal of 31148123 is 32184113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31148123 - 2⁴ = 31148107 is a prime.

It is not a weakly prime, because it can be changed into another prime (31148023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15574061 + 15574062.

It is an arithmetic number, because the mean of its divisors is an integer number (15574062).

Almost surely, 2^31148123 is an apocalyptic number.

31148123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31148123 is an equidigital number, since it uses as much as digits as its factorization.

31148123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 31148123 is about 5581.0503491726. The cubic root of 31148123 is about 314.6376045698.

The spelling of 31148123 in words is "thirty-one million, one hundred forty-eight thousand, one hundred twenty-three".