1240431030 has 32 divisors (see below), whose sum is σ = 3307816800. Its totient is φ = 330781536.

The previous prime is 1240431011. The next prime is 1240431037. The reversal of 1240431030 is 301340421.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1240430994 and 1240431012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240431037) 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, 2296825 + ... + 2297364.

It is an arithmetic number, because the mean of its divisors is an integer number (103369275).

Almost surely, 2^1240431030 is an apocalyptic number.

1240431030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240431030 is an abundant number, since it is smaller than the sum of its proper divisors (2067385770).

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

1240431030 is a wasteful number, since it uses less digits than its factorization.

1240431030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594205 (or 4594199 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1240431030 is about 35219.7534062918. The cubic root of 1240431030 is about 1074.4615381564.

Adding to 1240431030 its reverse (301340421), we get a palindrome (1541771451).

It can be divided in two parts, 12404 and 31030, that added together give a palindrome (43434).

The spelling of 1240431030 in words is "one billion, two hundred forty million, four hundred thirty-one thousand, thirty".