1231260379 has 4 divisors (see below), whose sum is σ = 1231659520. Its totient is φ = 1230861240.

The previous prime is 1231260367. The next prime is 1231260383. The reversal of 1231260379 is 9730621321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231260379 - 2⁵ = 1231260347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231260319) 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, 194907 + ... + 201124.

It is an arithmetic number, because the mean of its divisors is an integer number (307914880).

Almost surely, 2^1231260379 is an apocalyptic number.

1231260379 is a deficient number, since it is larger than the sum of its proper divisors (399141).

1231260379 is an equidigital number, since it uses as much as digits as its factorization.

1231260379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399140.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 1231260379 is about 35089.3200133602. The cubic root of 1231260379 is about 1071.8071128019.

The spelling of 1231260379 in words is "one billion, two hundred thirty-one million, two hundred sixty thousand, three hundred seventy-nine".