31431340003 has 16 divisors (see below), whose sum is σ = 36642274560. Its totient is φ = 26401785696.

The previous prime is 31431339917. The next prime is 31431340013. The reversal of 31431340003 is 30004313413.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31431340003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31431340013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269376 + ... + 368002.

It is an arithmetic number, because the mean of its divisors is an integer number (2290142160).

Almost surely, 2^31431340003 is an apocalyptic number.

31431340003 is a deficient number, since it is larger than the sum of its proper divisors (5210934557).

31431340003 is an equidigital number, since it uses as much as digits as its factorization.

31431340003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99546.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31431340003 its reverse (30004313413), we get a palindrome (61435653416).

The spelling of 31431340003 in words is "thirty-one billion, four hundred thirty-one million, three hundred forty thousand, three".