31123023247 has 2 divisors, whose sum is σ = 31123023248. Its totient is φ = 31123023246.

The previous prime is 31123023203. The next prime is 31123023257. The reversal of 31123023247 is 74232032113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31123023247 - 2³¹ = 28975539599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31123023257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561511623 + 15561511624.

It is an arithmetic number, because the mean of its divisors is an integer number (15561511624).

Almost surely, 2^31123023247 is an apocalyptic number.

31123023247 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123023247 is an equidigital number, since it uses as much as digits as its factorization.

31123023247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The spelling of 31123023247 in words is "thirty-one billion, one hundred twenty-three million, twenty-three thousand, two hundred forty-seven".