31434143 has 8 divisors (see below), whose sum is σ = 34003200. Its totient is φ = 28886688.

The previous prime is 31434107. The next prime is 31434149. The reversal of 31434143 is 34143413.

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 31434143 - 2²⁴ = 14656927 is a prime.

It is a super-2 number, since 2×31434143² = 1976210692288898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434149) 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, 2303 + ... + 8256.

It is an arithmetic number, because the mean of its divisors is an integer number (4250400).

Almost surely, 2^31434143 is an apocalyptic number.

31434143 is a deficient number, since it is larger than the sum of its proper divisors (2569057).

31434143 is a wasteful number, since it uses less digits than its factorization.

31434143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10801.

The product of its digits is 1728, while the sum is 23.

The square root of 31434143 is about 5606.6160025456. The cubic root of 31434143 is about 315.5977329384.

Adding to 31434143 its reverse (34143413), we get a palindrome (65577556).

The spelling of 31434143 in words is "thirty-one million, four hundred thirty-four thousand, one hundred forty-three".