31012232103 has 20 divisors (see below), whose sum is σ = 46785609288. Its totient is φ = 20470114800.

The previous prime is 31012232059. The next prime is 31012232131. The reversal of 31012232103 is 30123221013.

It is not a de Polignac number, because 31012232103 - 2¹² = 31012228007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012232203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1887201 + ... + 1903562.

Almost surely, 2^31012232103 is an apocalyptic number.

31012232103 is a deficient number, since it is larger than the sum of its proper divisors (15773377185).

31012232103 is a wasteful number, since it uses less digits than its factorization.

31012232103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790876 (or 3790867 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31012232103 its reverse (30123221013), we get a palindrome (61135453116).

It can be divided in two parts, 310122 and 32103, that added together give a square (342225 = 585²).

The spelling of 31012232103 in words is "thirty-one billion, twelve million, two hundred thirty-two thousand, one hundred three".