31752404234 has 4 divisors (see below), whose sum is σ = 47628606354. Its totient is φ = 15876202116.

The previous prime is 31752404191. The next prime is 31752404267. The reversal of 31752404234 is 43240425713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43240425713 = 269 ⋅160745077.

It can be written as a sum of positive squares in only one way, i.e., 31682932009 + 69472225 = 177997^2 + 8335^2 .

It is a super-2 number, since 2×31752404234² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31752404194 and 31752404203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7938101057 + ... + 7938101060.

Almost surely, 2^31752404234 is an apocalyptic number.

31752404234 is a deficient number, since it is larger than the sum of its proper divisors (15876202120).

31752404234 is a wasteful number, since it uses less digits than its factorization.

31752404234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15876202119.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 31752404234 its reverse (43240425713), we get a palindrome (74992829947).

The spelling of 31752404234 in words is "thirty-one billion, seven hundred fifty-two million, four hundred four thousand, two hundred thirty-four".