31113303103 has 2 divisors, whose sum is σ = 31113303104. Its totient is φ = 31113303102.

The previous prime is 31113303097. The next prime is 31113303113. The reversal of 31113303103 is 30130331113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31113303103 - 2¹⁷ = 31113172031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31113303113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556651551 + 15556651552.

It is an arithmetic number, because the mean of its divisors is an integer number (15556651552).

Almost surely, 2^31113303103 is an apocalyptic number.

31113303103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113303103 is an equidigital number, since it uses as much as digits as its factorization.

31113303103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 19.

Adding to 31113303103 its reverse (30130331113), we get a palindrome (61243634216).

The spelling of 31113303103 in words is "thirty-one billion, one hundred thirteen million, three hundred three thousand, one hundred three".