30250121531 has 24 divisors (see below), whose sum is σ = 36777777120. Its totient is φ = 24776381952.

The previous prime is 30250121527. The next prime is 30250121537. The reversal of 30250121531 is 13512105203.

It is a happy number.

It is not a de Polignac number, because 30250121531 - 2² = 30250121527 is a prime.

It is a super-2 number, since 2×30250121531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30250121497 and 30250121506.

It is not an unprimeable number, because it can be changed into a prime (30250121537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28106 + ... + 247568.

It is an arithmetic number, because the mean of its divisors is an integer number (1532407380).

Almost surely, 2^30250121531 is an apocalyptic number.

30250121531 is a deficient number, since it is larger than the sum of its proper divisors (6527655589).

30250121531 is a wasteful number, since it uses less digits than its factorization.

30250121531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219603 (or 219596 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 30250121531 its reverse (13512105203), we get a palindrome (43762226734).

The spelling of 30250121531 in words is "thirty billion, two hundred fifty million, one hundred twenty-one thousand, five hundred thirty-one".