431997876 has 18 divisors (see below), whose sum is σ = 1091994722. Its totient is φ = 143999280.

The previous prime is 431997809. The next prime is 431997877. The reversal of 431997876 is 678799134.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 330512400 + 101485476 = 18180^2 + 10074^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×431997876² = 373244329737022752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431997877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5999935 + ... + 6000006.

Almost surely, 2^431997876 is an apocalyptic number.

It is an amenable number.

431997876 is an abundant number, since it is smaller than the sum of its proper divisors (659996846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431997876 is a wasteful number, since it uses less digits than its factorization.

431997876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11999951 (or 11999946 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 431997876 is about 20784.5585952649. The cubic root of 431997876 is about 755.9513910125.

The spelling of 431997876 in words is "four hundred thirty-one million, nine hundred ninety-seven thousand, eight hundred seventy-six".