1131451044 has 12 divisors (see below), whose sum is σ = 2640052464. Its totient is φ = 377150344.

The previous prime is 1131450977. The next prime is 1131451073. The reversal of 1131451044 is 4401541311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47143782 + ... + 47143805.

It is an arithmetic number, because the mean of its divisors is an integer number (220004372).

Almost surely, 2^1131451044 is an apocalyptic number.

It is an amenable number.

1131451044 is an abundant number, since it is smaller than the sum of its proper divisors (1508601420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131451044 is a wasteful number, since it uses less digits than its factorization.

1131451044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94287594 (or 94287592 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1131451044 is about 33637.0486814762. The cubic root of 1131451044 is about 1042.0260811354.

Adding to 1131451044 its reverse (4401541311), we get a palindrome (5532992355).

The spelling of 1131451044 in words is "one billion, one hundred thirty-one million, four hundred fifty-one thousand, forty-four".