31340422 has 4 divisors (see below), whose sum is σ = 47010636. Its totient is φ = 15670210.

The previous prime is 31340417. The next prime is 31340423. The reversal of 31340422 is 22404313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22404313 = 1597 ⋅14029.

It is a super-2 number, since 2×31340422² = 1964444102276168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31340422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31340423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835104 + ... + 7835107.

It is an arithmetic number, because the mean of its divisors is an integer number (11752659).

Almost surely, 2^31340422 is an apocalyptic number.

31340422 is a deficient number, since it is larger than the sum of its proper divisors (15670214).

31340422 is a wasteful number, since it uses less digits than its factorization.

31340422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15670213.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 31340422 is about 5598.2516913765. The cubic root of 31340422 is about 315.2837688125.

Adding to 31340422 its reverse (22404313), we get a palindrome (53744735).

The spelling of 31340422 in words is "thirty-one million, three hundred forty thousand, four hundred twenty-two".