6231913 has 2 divisors, whose sum is σ = 6231914. Its totient is φ = 6231912.

The previous prime is 6231893. The next prime is 6231949. The reversal of 6231913 is 3191326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4959529 + 1272384 = 2227^2 + 1128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6231913 is a prime.

6231913 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6231613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3115956 + 3115957.

It is an arithmetic number, because the mean of its divisors is an integer number (3115957).

Almost surely, 2^6231913 is an apocalyptic number.

It is an amenable number.

6231913 is a deficient number, since it is larger than the sum of its proper divisors (1).

6231913 is an equidigital number, since it uses as much as digits as its factorization.

6231913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

The square root of 6231913 is about 2496.3799790897. The cubic root of 6231913 is about 184.0237150435.

The spelling of 6231913 in words is "six million, two hundred thirty-one thousand, nine hundred thirteen".