30521144342 has 32 divisors (see below), whose sum is σ = 52271788800. Its totient is φ = 13249238688.

The previous prime is 30521144309. The next prime is 30521144347. The reversal of 30521144342 is 24344112503.

It is a super-2 number, since 2×30521144342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30521144347) 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, 153578 + ... + 290909.

It is an arithmetic number, because the mean of its divisors is an integer number (1633493400).

Almost surely, 2^30521144342 is an apocalyptic number.

30521144342 is a deficient number, since it is larger than the sum of its proper divisors (21750644458).

30521144342 is a wasteful number, since it uses less digits than its factorization.

30521144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444660.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 30521144342 its reverse (24344112503), we get a palindrome (54865256845).

The spelling of 30521144342 in words is "thirty billion, five hundred twenty-one million, one hundred forty-four thousand, three hundred forty-two".