1013171240 has 32 divisors (see below), whose sum is σ = 2294169480. Its totient is φ = 402684672.

The previous prime is 1013171167. The next prime is 1013171249. The reversal of 1013171240 is 421713101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 544102276 + 469068964 = 23326^2 + 21658^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1013171249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74387 + ... + 86946.

Almost surely, 2^1013171240 is an apocalyptic number.

1013171240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013171240 is an abundant number, since it is smaller than the sum of its proper divisors (1280998240).

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

1013171240 is a wasteful number, since it uses less digits than its factorization.

1013171240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161501 (or 161497 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1013171240 is about 31830.3509248641. The cubic root of 1013171240 is about 1004.3712774248.

Adding to 1013171240 its reverse (421713101), we get a palindrome (1434884341).

The spelling of 1013171240 in words is "one billion, thirteen million, one hundred seventy-one thousand, two hundred forty".