2528978131 has 2 divisors, whose sum is σ = 2528978132. Its totient is φ = 2528978130.

The previous prime is 2528978119. The next prime is 2528978143. The reversal of 2528978131 is 1318798252.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2528978119) and next prime (2528978143).

It is a cyclic number.

It is not a de Polignac number, because 2528978131 - 2⁷ = 2528978003 is a prime.

It is a super-2 number, since 2×2528978131² = 12791460774152506322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2528978161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264489065 + 1264489066.

It is an arithmetic number, because the mean of its divisors is an integer number (1264489066).

Almost surely, 2^2528978131 is an apocalyptic number.

2528978131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2528978131 is an equidigital number, since it uses as much as digits as its factorization.

2528978131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 2528978131 is about 50288.9464097231. The cubic root of 2528978131 is about 1362.4325932031.

The spelling of 2528978131 in words is "two billion, five hundred twenty-eight million, nine hundred seventy-eight thousand, one hundred thirty-one".