2686087531 has 2 divisors, whose sum is σ = 2686087532. Its totient is φ = 2686087530.

The previous prime is 2686087507. The next prime is 2686087543. The reversal of 2686087531 is 1357806862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2686087531 - 2³¹ = 538603883 is a prime.

It is a super-2 number, since 2×2686087531² = 14430132448387351922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2686087031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343043765 + 1343043766.

It is an arithmetic number, because the mean of its divisors is an integer number (1343043766).

Almost surely, 2^2686087531 is an apocalyptic number.

2686087531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686087531 is an equidigital number, since it uses as much as digits as its factorization.

2686087531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2686087531 is about 51827.4785321455. The cubic root of 2686087531 is about 1390.0808280724.

The spelling of 2686087531 in words is "two billion, six hundred eighty-six million, eighty-seven thousand, five hundred thirty-one".