31023103 has 2 divisors, whose sum is σ = 31023104. Its totient is φ = 31023102.

The previous prime is 31023071. The next prime is 31023107. The reversal of 31023103 is 30132013.

It is a strong prime.

It is an emirp because it is prime and its reverse (30132013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31023103 - 2⁵ = 31023071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511551 + 15511552.

It is an arithmetic number, because the mean of its divisors is an integer number (15511552).

Almost surely, 2^31023103 is an apocalyptic number.

31023103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023103 is an equidigital number, since it uses as much as digits as its factorization.

31023103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 31023103 is about 5569.8386870716. The cubic root of 31023103 is about 314.2160838365.

Adding to 31023103 its reverse (30132013), we get a palindrome (61155116).

The spelling of 31023103 in words is "thirty-one million, twenty-three thousand, one hundred three".