31142003 has 2 divisors, whose sum is σ = 31142004. Its totient is φ = 31142002.

The previous prime is 31141997. The next prime is 31142021. The reversal of 31142003 is 30024113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31142003 - 2⁴ = 31141987 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31142303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571001 + 15571002.

It is an arithmetic number, because the mean of its divisors is an integer number (15571002).

Almost surely, 2^31142003 is an apocalyptic number.

31142003 is a deficient number, since it is larger than the sum of its proper divisors (1).

31142003 is an equidigital number, since it uses as much as digits as its factorization.

31142003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31142003 is about 5580.5020383474. The cubic root of 31142003 is about 314.6169964980.

Adding to 31142003 its reverse (30024113), we get a palindrome (61166116).

The spelling of 31142003 in words is "thirty-one million, one hundred forty-two thousand, three".