31148723 has 2 divisors, whose sum is σ = 31148724. Its totient is φ = 31148722.

The previous prime is 31148717. The next prime is 31148729. The reversal of 31148723 is 32784113.

It is a balanced prime because it is at equal distance from previous prime (31148717) and next prime (31148729).

It is an emirp because it is prime and its reverse (32784113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31148723 - 2¹⁸ = 30886579 is a prime.

It is equal to p_1924562 and since 31148723 and 1924562 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (31148729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15574361 + 15574362.

It is an arithmetic number, because the mean of its divisors is an integer number (15574362).

Almost surely, 2^31148723 is an apocalyptic number.

31148723 is a deficient number, since it is larger than the sum of its proper divisors (1).

31148723 is an equidigital number, since it uses as much as digits as its factorization.

31148723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 31148723 is about 5581.1041022364. The cubic root of 31148723 is about 314.6396248237.

The spelling of 31148723 in words is "thirty-one million, one hundred forty-eight thousand, seven hundred twenty-three".