30523451240 has 16 divisors (see below), whose sum is σ = 68677765380. Its totient is φ = 12209380480.

The previous prime is 30523451207. The next prime is 30523451243. The reversal of 30523451240 is 4215432503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28739064676 + 1784386564 = 169526^2 + 42242^2 .

It is not an unprimeable number, because it can be changed into a prime (30523451243) 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, 381543101 + ... + 381543180.

Almost surely, 2^30523451240 is an apocalyptic number.

It is an amenable number.

30523451240 is an abundant number, since it is smaller than the sum of its proper divisors (38154314140).

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

30523451240 is a wasteful number, since it uses less digits than its factorization.

30523451240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763086292 (or 763086288 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 30523451240 its reverse (4215432503), we get a palindrome (34738883743).

The spelling of 30523451240 in words is "thirty billion, five hundred twenty-three million, four hundred fifty-one thousand, two hundred forty".