1121431032 has 24 divisors (see below), whose sum is σ = 3037209240. Its totient is φ = 373810320.

The previous prime is 1121431009. The next prime is 1121431049. The reversal of 1121431032 is 2301341211.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1121430996 and 1121431014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7787644 + ... + 7787787.

It is an arithmetic number, because the mean of its divisors is an integer number (126550385).

Almost surely, 2^1121431032 is an apocalyptic number.

1121431032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121431032 is an abundant number, since it is smaller than the sum of its proper divisors (1915778208).

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

1121431032 is a wasteful number, since it uses less digits than its factorization.

1121431032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15575443 (or 15575436 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1121431032 is about 33487.7743661773. The cubic root of 1121431032 is about 1038.9409312478.

Adding to 1121431032 its reverse (2301341211), we get a palindrome (3422772243).

The spelling of 1121431032 in words is "one billion, one hundred twenty-one million, four hundred thirty-one thousand, thirty-two".