1047720311 has 8 divisors (see below), whose sum is σ = 1192662144. Its totient is φ = 911060920.

The previous prime is 1047720307. The next prime is 1047720347. The reversal of 1047720311 is 1130277401.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1047720311 - 2² = 1047720307 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 (1047720391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2070341 + ... + 2070846.

It is an arithmetic number, because the mean of its divisors is an integer number (149082768).

Almost surely, 2^1047720311 is an apocalyptic number.

1047720311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1047720311 is a deficient number, since it is larger than the sum of its proper divisors (144941833).

1047720311 is a wasteful number, since it uses less digits than its factorization.

1047720311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141221.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1047720311 is about 32368.5080131908. The cubic root of 1047720311 is about 1015.6602468127.

Adding to 1047720311 its reverse (1130277401), we get a palindrome (2177997712).

The spelling of 1047720311 in words is "one billion, forty-seven million, seven hundred twenty thousand, three hundred eleven".