2987813531 has 2 divisors, whose sum is σ = 2987813532. Its totient is φ = 2987813530.

The previous prime is 2987813509. The next prime is 2987813539. The reversal of 2987813531 is 1353187892.

2987813531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2987813531 is a prime.

It is a super-2 number, since 2×2987813531² = 17854059392053375922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2987813539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1493906765 + 1493906766.

It is an arithmetic number, because the mean of its divisors is an integer number (1493906766).

Almost surely, 2^2987813531 is an apocalyptic number.

2987813531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2987813531 is an equidigital number, since it uses as much as digits as its factorization.

2987813531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 2987813531 is about 54660.8958122715. The cubic root of 2987813531 is about 1440.2940389455.

The spelling of 2987813531 in words is "two billion, nine hundred eighty-seven million, eight hundred thirteen thousand, five hundred thirty-one".