1231240450 has 24 divisors (see below), whose sum is σ = 2498299920. Its totient is φ = 447723600.

The previous prime is 1231240433. The next prime is 1231240463. The reversal of 1231240450 is 540421321.

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

It is an unprimeable number.

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, 1118760 + ... + 1119859.

It is an arithmetic number, because the mean of its divisors is an integer number (104095830).

Almost surely, 2^1231240450 is an apocalyptic number.

1231240450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231240450 is an abundant number, since it is smaller than the sum of its proper divisors (1267059470).

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

1231240450 is a wasteful number, since it uses less digits than its factorization.

1231240450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238642 (or 2238637 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1231240450 is about 35089.0360369161. The cubic root of 1231240450 is about 1071.8013300664.

Adding to 1231240450 its reverse (540421321), we get a palindrome (1771661771).

The spelling of 1231240450 in words is "one billion, two hundred thirty-one million, two hundred forty thousand, four hundred fifty".