31412879 has 2 divisors, whose sum is σ = 31412880. Its totient is φ = 31412878.

The previous prime is 31412861. The next prime is 31412897. The reversal of 31412879 is 97821413.

Together with next prime (31412897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (31412861) and next prime (31412897).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31412879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31412279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15706439 + 15706440.

It is an arithmetic number, because the mean of its divisors is an integer number (15706440).

Almost surely, 2^31412879 is an apocalyptic number.

31412879 is a deficient number, since it is larger than the sum of its proper divisors (1).

31412879 is an equidigital number, since it uses as much as digits as its factorization.

31412879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 31412879 is about 5604.7193506901. The cubic root of 31412879 is about 315.5265536056.

The spelling of 31412879 in words is "thirty-one million, four hundred twelve thousand, eight hundred seventy-nine".