31123301103 has 6 divisors (see below), whose sum is σ = 44955879384. Its totient is φ = 20748867396.

The previous prime is 31123301087. The next prime is 31123301119. The reversal of 31123301103 is 30110332113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31123301087) and next prime (31123301119).

It is not a de Polignac number, because 31123301103 - 2⁴ = 31123301087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123301003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1729072275 + ... + 1729072292.

It is an arithmetic number, because the mean of its divisors is an integer number (7492646564).

Almost surely, 2^31123301103 is an apocalyptic number.

31123301103 is a deficient number, since it is larger than the sum of its proper divisors (13832578281).

31123301103 is a wasteful number, since it uses less digits than its factorization.

31123301103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458144573 (or 3458144570 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31123301103 its reverse (30110332113), we get a palindrome (61233633216).

The spelling of 31123301103 in words is "thirty-one billion, one hundred twenty-three million, three hundred one thousand, one hundred three".