1230515461 has 4 divisors (see below), whose sum is σ = 1406303392. Its totient is φ = 1054727532.

The previous prime is 1230515453. The next prime is 1230515527. The reversal of 1230515461 is 1645150321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1645150321 = 19 ⋅86586859.

It is a cyclic number.

It is not a de Polignac number, because 1230515461 - 2³ = 1230515453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230515261) 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, 87893955 + ... + 87893968.

It is an arithmetic number, because the mean of its divisors is an integer number (351575848).

Almost surely, 2^1230515461 is an apocalyptic number.

It is an amenable number.

1230515461 is a deficient number, since it is larger than the sum of its proper divisors (175787931).

1230515461 is an equidigital number, since it uses as much as digits as its factorization.

1230515461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175787930.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1230515461 is about 35078.7038101467. The cubic root of 1230515461 is about 1071.5909198416.

Adding to 1230515461 its reverse (1645150321), we get a palindrome (2875665782).

The spelling of 1230515461 in words is "one billion, two hundred thirty million, five hundred fifteen thousand, four hundred sixty-one".