31440230383 has 2 divisors, whose sum is σ = 31440230384. Its totient is φ = 31440230382.

The previous prime is 31440230299. The next prime is 31440230401. The reversal of 31440230383 is 38303204413.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31440230383 is a prime.

It is a super-2 number, since 2×31440230383² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31440234383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720115191 + 15720115192.

It is an arithmetic number, because the mean of its divisors is an integer number (15720115192).

Almost surely, 2^31440230383 is an apocalyptic number.

31440230383 is a deficient number, since it is larger than the sum of its proper divisors (1).

31440230383 is an equidigital number, since it uses as much as digits as its factorization.

31440230383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 31440230383 its reverse (38303204413), we get a palindrome (69743434796).

The spelling of 31440230383 in words is "thirty-one billion, four hundred forty million, two hundred thirty thousand, three hundred eighty-three".