143456431 has 4 divisors (see below), whose sum is σ = 143504632. Its totient is φ = 143408232.

The previous prime is 143456419. The next prime is 143456449. The reversal of 143456431 is 134654341.

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 143456431 - 2²⁷ = 9238703 is a prime.

It is a super-2 number, since 2×143456431² = 41159495190515522, 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 = 143456393 and 143456402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143456491) 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, 19320 + ... + 25693.

It is an arithmetic number, because the mean of its divisors is an integer number (35876158).

Almost surely, 2^143456431 is an apocalyptic number.

143456431 is a deficient number, since it is larger than the sum of its proper divisors (48201).

143456431 is an equidigital number, since it uses as much as digits as its factorization.

143456431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48200.

The product of its digits is 17280, while the sum is 31.

The square root of 143456431 is about 11977.3298777315. The cubic root of 143456431 is about 523.4879316156.

The spelling of 143456431 in words is "one hundred forty-three million, four hundred fifty-six thousand, four hundred thirty-one".