1201323530 has 32 divisors (see below), whose sum is σ = 2497728960. Its totient is φ = 411147520.

The previous prime is 1201323527. The next prime is 1201323559. The reversal of 1201323530 is 353231021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319340 + ... + 323079.

It is an arithmetic number, because the mean of its divisors is an integer number (78054030).

Almost surely, 2^1201323530 is an apocalyptic number.

1201323530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201323530 is an abundant number, since it is smaller than the sum of its proper divisors (1296405430).

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

1201323530 is a wasteful number, since it uses less digits than its factorization.

1201323530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642454.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1201323530 is about 34660.1143968106. The cubic root of 1201323530 is about 1063.0491091080.

Adding to 1201323530 its reverse (353231021), we get a palindrome (1554554551).

The spelling of 1201323530 in words is "one billion, two hundred one million, three hundred twenty-three thousand, five hundred thirty".