31223234001 has 4 divisors (see below), whose sum is σ = 41630978672. Its totient is φ = 20815489332.

The previous prime is 31223233997. The next prime is 31223234039. The reversal of 31223234001 is 10043232213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31223234001 - 2² = 31223233997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223234041) 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, 5203872331 + ... + 5203872336.

It is an arithmetic number, because the mean of its divisors is an integer number (10407744668).

Almost surely, 2^31223234001 is an apocalyptic number.

It is an amenable number.

31223234001 is a deficient number, since it is larger than the sum of its proper divisors (10407744671).

31223234001 is a wasteful number, since it uses less digits than its factorization.

31223234001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407744670.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31223234001 its reverse (10043232213), we get a palindrome (41266466214).

The spelling of 31223234001 in words is "thirty-one billion, two hundred twenty-three million, two hundred thirty-four thousand, one".