31203102103 has 2 divisors, whose sum is σ = 31203102104. Its totient is φ = 31203102102.

The previous prime is 31203102101. The next prime is 31203102107. The reversal of 31203102103 is 30120130213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31203102103 - 2¹ = 31203102101 is a prime.

Together with 31203102101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31203102101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15601551051 + 15601551052.

It is an arithmetic number, because the mean of its divisors is an integer number (15601551052).

Almost surely, 2^31203102103 is an apocalyptic number.

31203102103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31203102103 is an equidigital number, since it uses as much as digits as its factorization.

31203102103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31203102103 its reverse (30120130213), we get a palindrome (61323232316).

The spelling of 31203102103 in words is "thirty-one billion, two hundred three million, one hundred two thousand, one hundred three".