31134233 has 4 divisors (see below), whose sum is σ = 33529188. Its totient is φ = 28739280.

The previous prime is 31134221. The next prime is 31134239. The reversal of 31134233 is 33243113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33243113 = 601 ⋅55313.

It can be written as a sum of positive squares in 2 ways, for example, as 10413529 + 20720704 = 3227^2 + 4552^2 .

It is a cyclic number.

It is not a de Polignac number, because 31134233 - 2¹⁰ = 31133209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31134239) 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, 1197458 + ... + 1197483.

It is an arithmetic number, because the mean of its divisors is an integer number (8382297).

Almost surely, 2^31134233 is an apocalyptic number.

It is an amenable number.

31134233 is a deficient number, since it is larger than the sum of its proper divisors (2394955).

31134233 is a wasteful number, since it uses less digits than its factorization.

31134233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394954.

The product of its digits is 648, while the sum is 20.

The square root of 31134233 is about 5579.8058209941. The cubic root of 31134233 is about 314.5908284381.

Adding to 31134233 its reverse (33243113), we get a palindrome (64377346).

The spelling of 31134233 in words is "thirty-one million, one hundred thirty-four thousand, two hundred thirty-three".