2521113731 has 2 divisors, whose sum is σ = 2521113732. Its totient is φ = 2521113730.

The previous prime is 2521113691. The next prime is 2521113757. The reversal of 2521113731 is 1373111252.

It is an a-pointer prime, because the next prime (2521113757) can be obtained adding 2521113731 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521113731 - 2²⁶ = 2454004867 is a prime.

It is a super-2 number, since 2×2521113731² = 12712028889273480722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2521113731.

It is not a weakly prime, because it can be changed into another prime (2521113031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260556865 + 1260556866.

It is an arithmetic number, because the mean of its divisors is an integer number (1260556866).

Almost surely, 2^2521113731 is an apocalyptic number.

2521113731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521113731 is an equidigital number, since it uses as much as digits as its factorization.

2521113731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 2521113731 is about 50210.6933929417. The cubic root of 2521113731 is about 1361.0188679584.

Adding to 2521113731 its reverse (1373111252), we get a palindrome (3894224983).

The spelling of 2521113731 in words is "two billion, five hundred twenty-one million, one hundred thirteen thousand, seven hundred thirty-one".