31316426 has 8 divisors (see below), whose sum is σ = 47135844. Its totient is φ = 15604480.

The previous prime is 31316423. The next prime is 31316443. The reversal of 31316426 is 62461313.

It can be written as a sum of positive squares in 2 ways, for example, as 27510025 + 3806401 = 5245^2 + 1951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31316395 and 31316404.

It is not an unprimeable number, because it can be changed into a prime (31316423) 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, 26135 + ... + 27306.

Almost surely, 2^31316426 is an apocalyptic number.

31316426 is a deficient number, since it is larger than the sum of its proper divisors (15819418).

31316426 is a wasteful number, since it uses less digits than its factorization.

31316426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53736.

The product of its digits is 2592, while the sum is 26.

The square root of 31316426 is about 5596.1081118935. The cubic root of 31316426 is about 315.2032819043.

Adding to 31316426 its reverse (62461313), we get a palindrome (93777739).

The spelling of 31316426 in words is "thirty-one million, three hundred sixteen thousand, four hundred twenty-six".