7214887531 has 2 divisors, whose sum is σ = 7214887532. Its totient is φ = 7214887530.

The previous prime is 7214887513. The next prime is 7214887553. The reversal of 7214887531 is 1357884127.

Together with previous prime (7214887513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7214887531 is a prime.

It is a super-2 number, since 2×7214887531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7214887591) 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, 3607443765 + 3607443766.

It is an arithmetic number, because the mean of its divisors is an integer number (3607443766).

Almost surely, 2^7214887531 is an apocalyptic number.

7214887531 is a deficient number, since it is larger than the sum of its proper divisors (1).

7214887531 is an equidigital number, since it uses as much as digits as its factorization.

7214887531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 7214887531 is about 84940.4940590764. The cubic root of 7214887531 is about 1932.3087560240.

The spelling of 7214887531 in words is "seven billion, two hundred fourteen million, eight hundred eighty-seven thousand, five hundred thirty-one".