1031645106 has 64 divisors (see below), whose sum is σ = 2357942400. Its totient is φ = 334196928.

The previous prime is 1031645057. The next prime is 1031645107. The reversal of 1031645106 is 6015461301.

1031645106 is a `hidden beast` number, since 1 + 0 + 3 + 1 + 645 + 10 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1031645106.

It is not an unprimeable number, because it can be changed into a prime (1031645107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310305 + ... + 313611.

It is an arithmetic number, because the mean of its divisors is an integer number (36842850).

Almost surely, 2^1031645106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031645106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1178971200).

1031645106 is an abundant number, since it is smaller than the sum of its proper divisors (1326297294).

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

1031645106 is a wasteful number, since it uses less digits than its factorization.

1031645106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3474 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1031645106 is about 32119.2326496135. The cubic root of 1031645106 is about 1010.4390164125.

The spelling of 1031645106 in words is "one billion, thirty-one million, six hundred forty-five thousand, one hundred six".