1131951355 has 4 divisors (see below), whose sum is σ = 1358341632. Its totient is φ = 905561080.

The previous prime is 1131951349. The next prime is 1131951437. The reversal of 1131951355 is 5531591311.

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

It is not a de Polignac number, because 1131951355 - 2³ = 1131951347 is a prime.

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 1131951355.

It is an unprimeable number.

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, 113195131 + ... + 113195140.

It is an arithmetic number, because the mean of its divisors is an integer number (339585408).

Almost surely, 2^1131951355 is an apocalyptic number.

1131951355 is a deficient number, since it is larger than the sum of its proper divisors (226390277).

1131951355 is an equidigital number, since it uses as much as digits as its factorization.

1131951355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226390276.

The product of its digits is 10125, while the sum is 34.

The square root of 1131951355 is about 33644.4847634794. The cubic root of 1131951355 is about 1042.1796480351.

The spelling of 1131951355 in words is "one billion, one hundred thirty-one million, nine hundred fifty-one thousand, three hundred fifty-five".