31434041381 has 2 divisors, whose sum is σ = 31434041382. Its totient is φ = 31434041380.

The previous prime is 31434041363. The next prime is 31434041459. The reversal of 31434041381 is 18314043413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29381045281 + 2052996100 = 171409^2 + 45310^2 .

It is a cyclic number.

It is not a de Polignac number, because 31434041381 - 2²² = 31429847077 is a prime.

It is a super-2 number, since 2×31434041381² (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 (31434041321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717020690 + 15717020691.

It is an arithmetic number, because the mean of its divisors is an integer number (15717020691).

Almost surely, 2^31434041381 is an apocalyptic number.

It is an amenable number.

31434041381 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434041381 is an equidigital number, since it uses as much as digits as its factorization.

31434041381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 31434041381 its reverse (18314043413), we get a palindrome (49748084794).

The spelling of 31434041381 in words is "thirty-one billion, four hundred thirty-four million, forty-one thousand, three hundred eighty-one".