2113145231 has 2 divisors, whose sum is σ = 2113145232. Its totient is φ = 2113145230.

The previous prime is 2113145201. The next prime is 2113145257. The reversal of 2113145231 is 1325413112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2113145231 - 2¹⁴ = 2113128847 is a prime.

It is a super-2 number, since 2×2113145231² = 8930765534596086722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113145197 and 2113145206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113145201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056572615 + 1056572616.

It is an arithmetic number, because the mean of its divisors is an integer number (1056572616).

Almost surely, 2^2113145231 is an apocalyptic number.

2113145231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113145231 is an equidigital number, since it uses as much as digits as its factorization.

2113145231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 2113145231 is about 45968.9594291626. The cubic root of 2113145231 is about 1283.2455946238.

Adding to 2113145231 its reverse (1325413112), we get a palindrome (3438558343).

The spelling of 2113145231 in words is "two billion, one hundred thirteen million, one hundred forty-five thousand, two hundred thirty-one".