31152103 has 2 divisors, whose sum is σ = 31152104. Its totient is φ = 31152102.

The previous prime is 31152073. The next prime is 31152127. The reversal of 31152103 is 30125113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31152103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31152133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15576051 + 15576052.

It is an arithmetic number, because the mean of its divisors is an integer number (15576052).

Almost surely, 2^31152103 is an apocalyptic number.

31152103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31152103 is an equidigital number, since it uses as much as digits as its factorization.

31152103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 31152103 is about 5581.4069014900. The cubic root of 31152103 is about 314.6510051026.

Adding to 31152103 its reverse (30125113), we get a palindrome (61277216).

The spelling of 31152103 in words is "thirty-one million, one hundred fifty-two thousand, one hundred three".