1431105550 has 24 divisors (see below), whose sum is σ = 3042122256. Its totient is φ = 490664640.

The previous prime is 1431105547. The next prime is 1431105551. The reversal of 1431105550 is 555011341.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431105551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2044087 + ... + 2044786.

It is an arithmetic number, because the mean of its divisors is an integer number (126755094).

Almost surely, 2^1431105550 is an apocalyptic number.

1431105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1431105550 is an abundant number, since it is smaller than the sum of its proper divisors (1611016706).

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

1431105550 is a wasteful number, since it uses less digits than its factorization.

1431105550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088892 (or 4088887 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1431105550 is about 37829.9557229453. The cubic root of 1431105550 is about 1126.9134318019.

Adding to 1431105550 its reverse (555011341), we get a palindrome (1986116891).

The spelling of 1431105550 in words is "one billion, four hundred thirty-one million, one hundred five thousand, five hundred fifty".