630513121 has 8 divisors (see below), whose sum is σ = 721384704. Its totient is φ = 539841120.

The previous prime is 630513109. The next prime is 630513127. The reversal of 630513121 is 121315036.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630513121 - 2¹⁵ = 630480353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630513092 and 630513101.

It is not an unprimeable number, because it can be changed into a prime (630513127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43060 + ... + 55813.

It is an arithmetic number, because the mean of its divisors is an integer number (90173088).

Almost surely, 2^630513121 is an apocalyptic number.

It is an amenable number.

630513121 is a deficient number, since it is larger than the sum of its proper divisors (90871583).

630513121 is an equidigital number, since it uses as much as digits as its factorization.

630513121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99791.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 630513121 is about 25110.0203305374. The cubic root of 630513121 is about 857.4945653252.

Adding to 630513121 its reverse (121315036), we get a palindrome (751828157).

The spelling of 630513121 in words is "six hundred thirty million, five hundred thirteen thousand, one hundred twenty-one".