1046781317 has 4 divisors (see below), whose sum is σ = 1047157836. Its totient is φ = 1046404800.

The previous prime is 1046781259. The next prime is 1046781403. The reversal of 1046781317 is 7131876401.

It is a happy number.

It is a Cunningham number, because it is equal to 32354²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 534256996 + 512524321 = 23114^2 + 22639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1046781317 - 2²⁰ = 1045732741 is a prime.

It is a super-2 number, since 2×1046781317² = 2191502251240508978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046781017) 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, 184058 + ... + 189659.

It is an arithmetic number, because the mean of its divisors is an integer number (261789459).

Almost surely, 2^1046781317 is an apocalyptic number.

It is an amenable number.

1046781317 is a deficient number, since it is larger than the sum of its proper divisors (376519).

1046781317 is an equidigital number, since it uses as much as digits as its factorization.

1046781317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376518.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 1046781317 is about 32354.0000154540. Note that the first 4 decimals coincide. The cubic root of 1046781317 is about 1015.3567358090.

The spelling of 1046781317 in words is "one billion, forty-six million, seven hundred eighty-one thousand, three hundred seventeen".