143407431 has 6 divisors (see below), whose sum is σ = 207144080. Its totient is φ = 95604948.

The previous prime is 143407423. The next prime is 143407441. The reversal of 143407431 is 134704341.

It is not a de Polignac number, because 143407431 - 2³ = 143407423 is a prime.

It is a super-2 number, since 2×143407431² = 41131382532039522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143407395 and 143407404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143407441) 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, 7967071 + ... + 7967088.

Almost surely, 2^143407431 is an apocalyptic number.

143407431 is a deficient number, since it is larger than the sum of its proper divisors (63736649).

143407431 is a wasteful number, since it uses less digits than its factorization.

143407431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934165 (or 15934162 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 143407431 is about 11975.2841719936. The cubic root of 143407431 is about 523.4283227398.

The spelling of 143407431 in words is "one hundred forty-three million, four hundred seven thousand, four hundred thirty-one".