31343331023 has 4 divisors (see below), whose sum is σ = 31345939248. Its totient is φ = 31340722800.

The previous prime is 31343331013. The next prime is 31343331053. The reversal of 31343331023 is 32013334313.

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 31343331023 - 2¹⁶ = 31343265487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31343330983 and 31343331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343331013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286003 + ... + 1310148.

It is an arithmetic number, because the mean of its divisors is an integer number (7836484812).

Almost surely, 2^31343331023 is an apocalyptic number.

31343331023 is a deficient number, since it is larger than the sum of its proper divisors (2608225).

31343331023 is a wasteful number, since it uses less digits than its factorization.

31343331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608224.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 31343331023 its reverse (32013334313), we get a palindrome (63356665336).

The spelling of 31343331023 in words is "thirty-one billion, three hundred forty-three million, three hundred thirty-one thousand, twenty-three".