31342849 has 4 divisors (see below), whose sum is σ = 33186564. Its totient is φ = 29499136.

The previous prime is 31342847. The next prime is 31342853. The reversal of 31342849 is 94824313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27751824 + 3591025 = 5268^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 31342849 - 2¹ = 31342847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31342847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921832 + ... + 921865.

It is an arithmetic number, because the mean of its divisors is an integer number (8296641).

Almost surely, 2^31342849 is an apocalyptic number.

It is an amenable number.

31342849 is a deficient number, since it is larger than the sum of its proper divisors (1843715).

31342849 is a wasteful number, since it uses less digits than its factorization.

31342849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843714.

The product of its digits is 20736, while the sum is 34.

The square root of 31342849 is about 5598.4684512820. The cubic root of 31342849 is about 315.2919071198.

The spelling of 31342849 in words is "thirty-one million, three hundred forty-two thousand, eight hundred forty-nine".