1131551110 has 16 divisors (see below), whose sum is σ = 2156603616. Its totient is φ = 425995648.

The previous prime is 1131551051. The next prime is 1131551143. The reversal of 1131551110 is 111551311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3327922 + ... + 3328261.

It is an arithmetic number, because the mean of its divisors is an integer number (134787726).

Almost surely, 2^1131551110 is an apocalyptic number.

1131551110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131551110 is a deficient number, since it is larger than the sum of its proper divisors (1025052506).

1131551110 is a wasteful number, since it uses less digits than its factorization.

1131551110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656207.

The product of its (nonzero) digits is 75, while the sum is 19.

The square root of 1131551110 is about 33638.5360858644. The cubic root of 1131551110 is about 1042.0567993029.

The spelling of 1131551110 in words is "one billion, one hundred thirty-one million, five hundred fifty-one thousand, one hundred ten".