73434431 has 8 divisors (see below), whose sum is σ = 84009984. Its totient is φ = 62880120.

The previous prime is 73434419. The next prime is 73434433. The reversal of 73434431 is 13443437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73434431 - 2⁶ = 73434367 is a prime.

It is a super-2 number, since 2×73434431² = 10785231312587522, 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 = 73434394 and 73434403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73434433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2966 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (10501248).

Almost surely, 2^73434431 is an apocalyptic number.

73434431 is a deficient number, since it is larger than the sum of its proper divisors (10575553).

73434431 is a wasteful number, since it uses less digits than its factorization.

73434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10621.

The product of its digits is 12096, while the sum is 29.

The square root of 73434431 is about 8569.3891847669. The cubic root of 73434431 is about 418.7613373035.

Adding to 73434431 its reverse (13443437), we get a palindrome (86877868).

The spelling of 73434431 in words is "seventy-three million, four hundred thirty-four thousand, four hundred thirty-one".