987411431 has 2 divisors, whose sum is σ = 987411432. Its totient is φ = 987411430.

The previous prime is 987411427. The next prime is 987411443. The reversal of 987411431 is 134114789.

It is a weak prime.

It is an emirp because it is prime and its reverse (134114789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987411431 - 2² = 987411427 is a prime.

It is a super-2 number, since 2×987411431² = 1949962668138935522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987411031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493705715 + 493705716.

It is an arithmetic number, because the mean of its divisors is an integer number (493705716).

Almost surely, 2^987411431 is an apocalyptic number.

987411431 is a deficient number, since it is larger than the sum of its proper divisors (1).

987411431 is an equidigital number, since it uses as much as digits as its factorization.

987411431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 987411431 is about 31423.1034590793. The cubic root of 987411431 is about 995.7860781383.

The spelling of 987411431 in words is "nine hundred eighty-seven million, four hundred eleven thousand, four hundred thirty-one".