987269431 has 16 divisors (see below), whose sum is σ = 1079285760. Its totient is φ = 899627040.

The previous prime is 987269429. The next prime is 987269449. The reversal of 987269431 is 134962789.

It is a cyclic number.

It is not a de Polignac number, because 987269431 - 2¹ = 987269429 is a prime.

It is a super-2 number, since 2×987269431² = 1949401858774127522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987269401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93345 + ... + 103381.

It is an arithmetic number, because the mean of its divisors is an integer number (67455360).

Almost surely, 2^987269431 is an apocalyptic number.

987269431 is a deficient number, since it is larger than the sum of its proper divisors (92016329).

987269431 is a wasteful number, since it uses less digits than its factorization.

987269431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10254.

The product of its digits is 653184, while the sum is 49.

The square root of 987269431 is about 31420.8438938231. The cubic root of 987269431 is about 995.7383410628.

The spelling of 987269431 in words is "nine hundred eighty-seven million, two hundred sixty-nine thousand, four hundred thirty-one".