31830126 has 16 divisors (see below), whose sum is σ = 63816528. Its totient is φ = 10584000.

The previous prime is 31830121. The next prime is 31830131. The reversal of 31830126 is 62103813.

It is an interprime number because it is at equal distance from previous prime (31830121) and next prime (31830131).

It is a junction number, because it is equal to n+sod(n) for n = 31830096 and 31830105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31830121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3775 + ... + 8826.

It is an arithmetic number, because the mean of its divisors is an integer number (3988533).

Almost surely, 2^31830126 is an apocalyptic number.

31830126 is an abundant number, since it is smaller than the sum of its proper divisors (31986402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31830126 is a wasteful number, since it uses less digits than its factorization.

31830126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13027.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 31830126 is about 5641.8193873962. The cubic root of 31830126 is about 316.9174255097.

Adding to 31830126 its reverse (62103813), we get a palindrome (93933939).

The spelling of 31830126 in words is "thirty-one million, eight hundred thirty thousand, one hundred twenty-six".