986971431 has 16 divisors (see below), whose sum is σ = 1398532608. Its totient is φ = 616982400.

The previous prime is 986971429. The next prime is 986971481. The reversal of 986971431 is 134179689.

It is a happy number.

It is not a de Polignac number, because 986971431 - 2¹ = 986971429 is a prime.

It is a super-2 number, since 2×986971431² = 1948225211220375522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986971421) 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, 21885 + ... + 49526.

It is an arithmetic number, because the mean of its divisors is an integer number (87408288).

Almost surely, 2^986971431 is an apocalyptic number.

986971431 is a deficient number, since it is larger than the sum of its proper divisors (411561177).

986971431 is a wasteful number, since it uses less digits than its factorization.

986971431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71702.

The product of its digits is 326592, while the sum is 48.

The square root of 986971431 is about 31416.1014608751. The cubic root of 986971431 is about 995.6381455550.

It can be divided in two parts, 98697 and 1431, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 986971431 in words is "nine hundred eighty-six million, nine hundred seventy-one thousand, four hundred thirty-one".