31412543 has 2 divisors, whose sum is σ = 31412544. Its totient is φ = 31412542.

The previous prime is 31412527. The next prime is 31412587. The reversal of 31412543 is 34521413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31412543 - 2⁴ = 31412527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31402543) 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, 15706271 + 15706272.

It is an arithmetic number, because the mean of its divisors is an integer number (15706272).

Almost surely, 2^31412543 is an apocalyptic number.

31412543 is a deficient number, since it is larger than the sum of its proper divisors (1).

31412543 is an equidigital number, since it uses as much as digits as its factorization.

31412543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 31412543 is about 5604.6893758709. The cubic root of 31412543 is about 315.5254286179.

Adding to 31412543 its reverse (34521413), we get a palindrome (65933956).

The spelling of 31412543 in words is "thirty-one million, four hundred twelve thousand, five hundred forty-three".