31123033012003 has 4 divisors (see below), whose sum is σ = 31431181853808. Its totient is φ = 30814884170200.

The previous prime is 31123033011997. The next prime is 31123033012031. The reversal of 31123033012003 is 30021033032113.

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 31123033012003 - 2¹⁷ = 31123032880931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31123033012103) 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, 154074420751 + ... + 154074420952.

It is an arithmetic number, because the mean of its divisors is an integer number (7857795463452).

Almost surely, 2^{31123033012003} is an apocalyptic number.

31123033012003 is a deficient number, since it is larger than the sum of its proper divisors (308148841805).

31123033012003 is a wasteful number, since it uses less digits than its factorization.

31123033012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308148841804.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31123033012003 its reverse (30021033032113), we get a palindrome (61144066044116).

The spelling of 31123033012003 in words is "thirty-one trillion, one hundred twenty-three billion, thirty-three million, twelve thousand, three".