351136261 has 4 divisors (see below), whose sum is σ = 401298592. Its totient is φ = 300973932.

The previous prime is 351136249. The next prime is 351136301. The reversal of 351136261 is 162631153.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 351136261 - 2⁷ = 351136133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351136211) 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, 25081155 + ... + 25081168.

It is an arithmetic number, because the mean of its divisors is an integer number (100324648).

Almost surely, 2^351136261 is an apocalyptic number.

It is an amenable number.

351136261 is a deficient number, since it is larger than the sum of its proper divisors (50162331).

351136261 is an equidigital number, since it uses as much as digits as its factorization.

351136261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50162330.

The product of its digits is 3240, while the sum is 28.

The square root of 351136261 is about 18738.6301793914. The cubic root of 351136261 is about 705.4916751951.

The spelling of 351136261 in words is "three hundred fifty-one million, one hundred thirty-six thousand, two hundred sixty-one".