3131112823 has 2 divisors, whose sum is σ = 3131112824. Its totient is φ = 3131112822.

The previous prime is 3131112821. The next prime is 3131112839. The reversal of 3131112823 is 3282111313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3131112823 - 2¹ = 3131112821 is a prime.

Together with 3131112821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131112821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565556411 + 1565556412.

It is an arithmetic number, because the mean of its divisors is an integer number (1565556412).

Almost surely, 2^3131112823 is an apocalyptic number.

3131112823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131112823 is an equidigital number, since it uses as much as digits as its factorization.

3131112823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 3131112823 is about 55956.3474772970. The cubic root of 3131112823 is about 1462.9615283633.

The spelling of 3131112823 in words is "three billion, one hundred thirty-one million, one hundred twelve thousand, eight hundred twenty-three".