431401311 has 24 divisors (see below), whose sum is σ = 689107536. Its totient is φ = 257869440.

The previous prime is 431401309. The next prime is 431401319. The reversal of 431401311 is 113104134.

It is not a de Polignac number, because 431401311 - 2¹ = 431401309 is a prime.

It is a super-2 number, since 2×431401311² = 372214182265037442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431401319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22620 + ... + 37073.

It is an arithmetic number, because the mean of its divisors is an integer number (28712814).

Almost surely, 2^431401311 is an apocalyptic number.

431401311 is a deficient number, since it is larger than the sum of its proper divisors (257706225).

431401311 is a wasteful number, since it uses less digits than its factorization.

431401311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59783 (or 59780 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 431401311 is about 20770.2024785509. The cubic root of 431401311 is about 755.6032551257.

Adding to 431401311 its reverse (113104134), we get a palindrome (544505445).

The spelling of 431401311 in words is "four hundred thirty-one million, four hundred one thousand, three hundred eleven".