1230144135 has 32 divisors (see below), whose sum is σ = 2150599680. Its totient is φ = 595478400.

The previous prime is 1230144131. The next prime is 1230144161. The reversal of 1230144135 is 5314410321.

It is a happy number.

It is not a de Polignac number, because 1230144135 - 2² = 1230144131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230144131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103426 + ... + 114704.

It is an arithmetic number, because the mean of its divisors is an integer number (67206240).

Almost surely, 2^1230144135 is an apocalyptic number.

1230144135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230144135 is a deficient number, since it is larger than the sum of its proper divisors (920455545).

1230144135 is a wasteful number, since it uses less digits than its factorization.

1230144135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1230144135 is about 35073.4106553668. The cubic root of 1230144135 is about 1071.4831195974.

Adding to 1230144135 its reverse (5314410321), we get a palindrome (6544554456).

The spelling of 1230144135 in words is "one billion, two hundred thirty million, one hundred forty-four thousand, one hundred thirty-five".