31343086 has 4 divisors (see below), whose sum is σ = 47014632. Its totient is φ = 15671542.

The previous prime is 31343083. The next prime is 31343119. The reversal of 31343086 is 68034313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68034313 = 683 ⋅99611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835770 + ... + 7835773.

It is an arithmetic number, because the mean of its divisors is an integer number (11753658).

Almost surely, 2^31343086 is an apocalyptic number.

31343086 is a deficient number, since it is larger than the sum of its proper divisors (15671546).

31343086 is a wasteful number, since it uses less digits than its factorization.

31343086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15671545.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 31343086 is about 5598.4896177451. The cubic root of 31343086 is about 315.2927018146.

Adding to 31343086 its reverse (68034313), we get a palindrome (99377399).

The spelling of 31343086 in words is "thirty-one million, three hundred forty-three thousand, eighty-six".