31012212003 has 4 divisors (see below), whose sum is σ = 41349616008. Its totient is φ = 20674808000.

The previous prime is 31012211957. The next prime is 31012212013. The reversal of 31012212003 is 30021221013.

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 31012212003 - 2¹⁰ = 31012210979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31012212013) 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, 5168701998 + ... + 5168702003.

It is an arithmetic number, because the mean of its divisors is an integer number (10337404002).

Almost surely, 2^31012212003 is an apocalyptic number.

31012212003 is a deficient number, since it is larger than the sum of its proper divisors (10337404005).

31012212003 is a wasteful number, since it uses less digits than its factorization.

31012212003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10337404004.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31012212003 its reverse (30021221013), we get a palindrome (61033433016).

The spelling of 31012212003 in words is "thirty-one billion, twelve million, two hundred twelve thousand, three".