31443442323 has 16 divisors (see below), whose sum is σ = 44202721920. Its totient is φ = 19826807616.

The previous prime is 31443442319. The next prime is 31443442333. The reversal of 31443442323 is 32324434413.

It is a happy number.

It is not a de Polignac number, because 31443442323 - 2² = 31443442319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31443442313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411865 + ... + 482202.

It is an arithmetic number, because the mean of its divisors is an integer number (2762670120).

Almost surely, 2^31443442323 is an apocalyptic number.

31443442323 is a deficient number, since it is larger than the sum of its proper divisors (12759279597).

31443442323 is a wasteful number, since it uses less digits than its factorization.

31443442323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894706.

The product of its digits is 82944, while the sum is 33.

Adding to 31443442323 its reverse (32324434413), we get a palindrome (63767876736).

The spelling of 31443442323 in words is "thirty-one billion, four hundred forty-three million, four hundred forty-two thousand, three hundred twenty-three".