1064721131 has 4 divisors (see below), whose sum is σ = 1066262664. Its totient is φ = 1063179600.

The previous prime is 1064721121. The next prime is 1064721149. The reversal of 1064721131 is 1311274601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1064721131 - 2¹⁸ = 1064458987 is a prime.

It is a super-2 number, since 2×1064721131² = 2267262173595838322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1064721131.

It is not an unprimeable number, because it can be changed into a prime (1064721121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769730 + ... + 771111.

It is an arithmetic number, because the mean of its divisors is an integer number (266565666).

Almost surely, 2^1064721131 is an apocalyptic number.

1064721131 is a deficient number, since it is larger than the sum of its proper divisors (1541533).

1064721131 is an equidigital number, since it uses as much as digits as its factorization.

1064721131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541532.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1064721131 is about 32630.0648329114. The cubic root of 1064721131 is about 1021.1243308254.

Adding to 1064721131 its reverse (1311274601), we get a palindrome (2375995732).

The spelling of 1064721131 in words is "one billion, sixty-four million, seven hundred twenty-one thousand, one hundred thirty-one".