31240233403 has 2 divisors, whose sum is σ = 31240233404. Its totient is φ = 31240233402.

The previous prime is 31240233397. The next prime is 31240233407. The reversal of 31240233403 is 30433204213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31240233403 is a prime.

It is not a weakly prime, because it can be changed into another prime (31240233407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620116701 + 15620116702.

It is an arithmetic number, because the mean of its divisors is an integer number (15620116702).

Almost surely, 2^31240233403 is an apocalyptic number.

31240233403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31240233403 is an equidigital number, since it uses as much as digits as its factorization.

31240233403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31240233403 its reverse (30433204213), we get a palindrome (61673437616).

The spelling of 31240233403 in words is "thirty-one billion, two hundred forty million, two hundred thirty-three thousand, four hundred three".