3121735423 has 2 divisors, whose sum is σ = 3121735424. Its totient is φ = 3121735422.

The previous prime is 3121735411. The next prime is 3121735439. The reversal of 3121735423 is 3245371213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121735423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121735403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560867711 + 1560867712.

It is an arithmetic number, because the mean of its divisors is an integer number (1560867712).

Almost surely, 2^3121735423 is an apocalyptic number.

3121735423 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121735423 is an equidigital number, since it uses as much as digits as its factorization.

3121735423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 3121735423 is about 55872.4925432900. The cubic root of 3121735423 is about 1461.4995887332.

The spelling of 3121735423 in words is "three billion, one hundred twenty-one million, seven hundred thirty-five thousand, four hundred twenty-three".