153231640 has 16 divisors (see below), whose sum is σ = 344771280. Its totient is φ = 61292640.

The previous prime is 153231619. The next prime is 153231641. The reversal of 153231640 is 46132351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153231641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1915356 + ... + 1915435.

It is an arithmetic number, because the mean of its divisors is an integer number (21548205).

Almost surely, 2^153231640 is an apocalyptic number.

153231640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153231640 is an abundant number, since it is smaller than the sum of its proper divisors (191539640).

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

153231640 is a wasteful number, since it uses less digits than its factorization.

153231640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830802 (or 3830798 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 153231640 is about 12378.6768275127. The cubic root of 153231640 is about 535.1179057106.

Adding to 153231640 its reverse (46132351), we get a palindrome (199363991).

The spelling of 153231640 in words is "one hundred fifty-three million, two hundred thirty-one thousand, six hundred forty".