1200431132 has 48 divisors (see below), whose sum is σ = 2274713280. Its totient is φ = 552195072.

The previous prime is 1200431131. The next prime is 1200431143. The reversal of 1200431132 is 2311340021.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1200431132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200431131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1430369 + ... + 1431207.

It is an arithmetic number, because the mean of its divisors is an integer number (47389860).

Almost surely, 2^1200431132 is an apocalyptic number.

It is an amenable number.

1200431132 is a deficient number, since it is larger than the sum of its proper divisors (1074282148).

1200431132 is a wasteful number, since it uses less digits than its factorization.

1200431132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1200431132 is about 34647.2384469527. The cubic root of 1200431132 is about 1062.7858167543.

Adding to 1200431132 its reverse (2311340021), we get a palindrome (3511771153).

The spelling of 1200431132 in words is "one billion, two hundred million, four hundred thirty-one thousand, one hundred thirty-two".