31301121312003 has 4 divisors (see below), whose sum is σ = 41734828416008. Its totient is φ = 20867414208000.

The previous prime is 31301121311983. The next prime is 31301121312059. The reversal of 31301121312003 is 30021312110313.

It is a happy number.

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

It is not a de Polignac number, because 31301121312003 - 2¹⁶ = 31301121246467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31301121312203) 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, 5216853551998 + ... + 5216853552003.

It is an arithmetic number, because the mean of its divisors is an integer number (10433707104002).

Almost surely, 2^{31301121312003} is an apocalyptic number.

31301121312003 is a deficient number, since it is larger than the sum of its proper divisors (10433707104005).

31301121312003 is a wasteful number, since it uses less digits than its factorization.

31301121312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10433707104004.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31301121312003 its reverse (30021312110313), we get a palindrome (61322433422316).

The spelling of 31301121312003 in words is "thirty-one trillion, three hundred one billion, one hundred twenty-one million, three hundred twelve thousand, three".