1061315231 has 4 divisors (see below), whose sum is σ = 1062238464. Its totient is φ = 1060392000.

The previous prime is 1061315221. The next prime is 1061315237. The reversal of 1061315231 is 1325131601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1325131601 = 421 ⋅3147581.

It is a cyclic number.

It is not a de Polignac number, because 1061315231 - 2¹⁸ = 1061053087 is a prime.

It is a super-2 number, since 2×1061315231² = 2252780039105166722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1061315197 and 1061315206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061315237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459890 + ... + 462191.

It is an arithmetic number, because the mean of its divisors is an integer number (265559616).

Almost surely, 2^1061315231 is an apocalyptic number.

1061315231 is a deficient number, since it is larger than the sum of its proper divisors (923233).

1061315231 is an equidigital number, since it uses as much as digits as its factorization.

1061315231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923232.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1061315231 is about 32577.8334301101. The cubic root of 1061315231 is about 1020.0343545394.

Adding to 1061315231 its reverse (1325131601), we get a palindrome (2386446832).

The spelling of 1061315231 in words is "one billion, sixty-one million, three hundred fifteen thousand, two hundred thirty-one".