31434323 has 4 divisors (see below), whose sum is σ = 31903560. Its totient is φ = 30965088.

The previous prime is 31434287. The next prime is 31434329. The reversal of 31434323 is 32343413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32343413 = 157 ⋅206009.

It is a cyclic number.

It is not a de Polignac number, because 31434323 - 2⁶ = 31434259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31434329) 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, 234518 + ... + 234651.

It is an arithmetic number, because the mean of its divisors is an integer number (7975890).

Almost surely, 2^31434323 is an apocalyptic number.

31434323 is a deficient number, since it is larger than the sum of its proper divisors (469237).

31434323 is an equidigital number, since it uses as much as digits as its factorization.

31434323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469236.

The product of its digits is 2592, while the sum is 23.

The square root of 31434323 is about 5606.6320549863. The cubic root of 31434323 is about 315.5983353352.

Adding to 31434323 its reverse (32343413), we get a palindrome (63777736).

The spelling of 31434323 in words is "thirty-one million, four hundred thirty-four thousand, three hundred twenty-three".