31126116 has 96 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 8225280.

The previous prime is 31126097. The next prime is 31126129. The reversal of 31126116 is 61162113.

31126116 = T₂₈₈ + T₂₈₉ + ... + T₅₉₄.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31126092 and 31126101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101235 + ... + 101541.

It is an arithmetic number, because the mean of its divisors is an integer number (931392).

Almost surely, 2^31126116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31126116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44706816).

31126116 is an abundant number, since it is smaller than the sum of its proper divisors (58287516).

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

31126116 is a wasteful number, since it uses less digits than its factorization.

31126116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 407 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 31126116 is about 5579.0784185204. The cubic root of 31126116 is about 314.5634870901.

Adding to 31126116 its reverse (61162113), we get a palindrome (92288229).

The spelling of 31126116 in words is "thirty-one million, one hundred twenty-six thousand, one hundred sixteen".