3121230407 has 2 divisors, whose sum is σ = 3121230408. Its totient is φ = 3121230406.

The previous prime is 3121230397. The next prime is 3121230419. The reversal of 3121230407 is 7040321213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3121230407 - 2¹⁰ = 3121229383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121230457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560615203 + 1560615204.

It is an arithmetic number, because the mean of its divisors is an integer number (1560615204).

Almost surely, 2^3121230407 is an apocalyptic number.

3121230407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121230407 is an equidigital number, since it uses as much as digits as its factorization.

3121230407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 3121230407 is about 55867.9729988479. The cubic root of 3121230407 is about 1461.4207735465.

The spelling of 3121230407 in words is "three billion, one hundred twenty-one million, two hundred thirty thousand, four hundred seven".