431401011443 has 4 divisors (see below), whose sum is σ = 435672308688. Its totient is φ = 427129714200.

The previous prime is 431401011383. The next prime is 431401011473. The reversal of 431401011443 is 344110104134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 431401011443 - 2²⁰ = 431399962867 is a prime.

It is a super-2 number, since 2×431401011443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431401011473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135648471 + ... + 2135648672.

It is an arithmetic number, because the mean of its divisors is an integer number (108918077172).

Almost surely, 2^431401011443 is an apocalyptic number.

431401011443 is a deficient number, since it is larger than the sum of its proper divisors (4271297245).

431401011443 is a wasteful number, since it uses less digits than its factorization.

431401011443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271297244.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 431401011443 its reverse (344110104134), we get a palindrome (775511115577).

The spelling of 431401011443 in words is "four hundred thirty-one billion, four hundred one million, eleven thousand, four hundred forty-three".