31234031323 has 4 divisors (see below), whose sum is σ = 34073488728. Its totient is φ = 28394573920.

The previous prime is 31234031321. The next prime is 31234031347. The reversal of 31234031323 is 32313043213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31234031323 - 2¹ = 31234031321 is a prime.

It is a super-2 number, since 2×31234031323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234031321) 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, 1419728686 + ... + 1419728707.

It is an arithmetic number, because the mean of its divisors is an integer number (8518372182).

Almost surely, 2^31234031323 is an apocalyptic number.

31234031323 is a deficient number, since it is larger than the sum of its proper divisors (2839457405).

31234031323 is a wasteful number, since it uses less digits than its factorization.

31234031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839457404.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 31234031323 its reverse (32313043213), we get a palindrome (63547074536).

The spelling of 31234031323 in words is "thirty-one billion, two hundred thirty-four million, thirty-one thousand, three hundred twenty-three".