1075720031 has 2 divisors, whose sum is σ = 1075720032. Its totient is φ = 1075720030.

The previous prime is 1075720021. The next prime is 1075720081. The reversal of 1075720031 is 1300275701.

It is a weak prime.

It is an emirp because it is prime and its reverse (1300275701) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1075720031 is a prime.

It is a super-2 number, since 2×1075720031² = 2314347170189281922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1075720001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537860015 + 537860016.

It is an arithmetic number, because the mean of its divisors is an integer number (537860016).

Almost surely, 2^1075720031 is an apocalyptic number.

1075720031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075720031 is an equidigital number, since it uses as much as digits as its factorization.

1075720031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 1075720031 is about 32798.1711532823. The cubic root of 1075720031 is about 1024.6284692741.

Adding to 1075720031 its reverse (1300275701), we get a palindrome (2375995732).

The spelling of 1075720031 in words is "one billion, seventy-five million, seven hundred twenty thousand, thirty-one".