1230278971 has 4 divisors (see below), whose sum is σ = 1263529792. Its totient is φ = 1197028152.

The previous prime is 1230278963. The next prime is 1230278981. The reversal of 1230278971 is 1798720321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1798720321 = 3643 ⋅493747.

It is a cyclic number.

It is not a de Polignac number, because 1230278971 - 2³ = 1230278963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230278921) 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, 16625355 + ... + 16625428.

It is an arithmetic number, because the mean of its divisors is an integer number (315882448).

Almost surely, 2^1230278971 is an apocalyptic number.

1230278971 is a deficient number, since it is larger than the sum of its proper divisors (33250821).

1230278971 is an equidigital number, since it uses as much as digits as its factorization.

1230278971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33250820.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 1230278971 is about 35075.3327995616. The cubic root of 1230278971 is about 1071.5222665601.

The spelling of 1230278971 in words is "one billion, two hundred thirty million, two hundred seventy-eight thousand, nine hundred seventy-one".