31434013 has 4 divisors (see below), whose sum is σ = 33852028. Its totient is φ = 29016000.

The previous prime is 31433993. The next prime is 31434017. The reversal of 31434013 is 31043413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31043413 = 2053 ⋅15121.

It can be written as a sum of positive squares in 2 ways, for example, as 18344089 + 13089924 = 4283^2 + 3618^2 .

It is not a de Polignac number, because 31434013 - 2⁵ = 31433981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434017) 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, 1208988 + ... + 1209013.

It is an arithmetic number, because the mean of its divisors is an integer number (8463007).

Almost surely, 2^31434013 is an apocalyptic number.

It is an amenable number.

31434013 is a deficient number, since it is larger than the sum of its proper divisors (2418015).

31434013 is a wasteful number, since it uses less digits than its factorization.

31434013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418014.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 31434013 is about 5606.6044090876. The cubic root of 31434013 is about 315.5972978726.

Adding to 31434013 its reverse (31043413), we get a palindrome (62477426).

The spelling of 31434013 in words is "thirty-one million, four hundred thirty-four thousand, thirteen".