31244142403 has 2 divisors, whose sum is σ = 31244142404. Its totient is φ = 31244142402.

The previous prime is 31244142343. The next prime is 31244142451. The reversal of 31244142403 is 30424144213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31244142403 is a prime.

It is a super-2 number, since 2×31244142403² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31244142463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622071201 + 15622071202.

It is an arithmetic number, because the mean of its divisors is an integer number (15622071202).

Almost surely, 2^31244142403 is an apocalyptic number.

31244142403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244142403 is an equidigital number, since it uses as much as digits as its factorization.

31244142403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31244142403 its reverse (30424144213), we get a palindrome (61668286616).

The spelling of 31244142403 in words is "thirty-one billion, two hundred forty-four million, one hundred forty-two thousand, four hundred three".