31012221111203 has 16 divisors (see below), whose sum is σ = 33340589312544. Its totient is φ = 28740232857600.

The previous prime is 31012221111149. The next prime is 31012221111211. The reversal of 31012221111203 is 30211112221013.

It is not a de Polignac number, because 31012221111203 - 2⁶ = 31012221111139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31012221110203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3019898 + ... + 8434703.

It is an arithmetic number, because the mean of its divisors is an integer number (2083786832034).

Almost surely, 2^{31012221111203} is an apocalyptic number.

31012221111203 is a deficient number, since it is larger than the sum of its proper divisors (2328368201341).

31012221111203 is a wasteful number, since it uses less digits than its factorization.

31012221111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11457062.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31012221111203 its reverse (30211112221013), we get a palindrome (61223333332216).

The spelling of 31012221111203 in words is "thirty-one trillion, twelve billion, two hundred twenty-one million, one hundred eleven thousand, two hundred three".