1231270150 has 24 divisors (see below), whose sum is σ = 2498360184. Its totient is φ = 447734400.

The previous prime is 1231270147. The next prime is 1231270151. The reversal of 1231270150 is 510721321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231270151) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1118787 + ... + 1119886.

It is an arithmetic number, because the mean of its divisors is an integer number (104098341).

Almost surely, 2^1231270150 is an apocalyptic number.

1231270150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231270150 is an abundant number, since it is smaller than the sum of its proper divisors (1267090034).

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

1231270150 is a wasteful number, since it uses less digits than its factorization.

1231270150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238696 (or 2238691 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1231270150 is about 35089.4592434822. The cubic root of 1231270150 is about 1071.8099479995.

Adding to 1231270150 its reverse (510721321), we get a palindrome (1741991471).

The spelling of 1231270150 in words is "one billion, two hundred thirty-one million, two hundred seventy thousand, one hundred fifty".