1231461479 has 2 divisors, whose sum is σ = 1231461480. Its totient is φ = 1231461478.

The previous prime is 1231461461. The next prime is 1231461509. The reversal of 1231461479 is 9741641321.

It is a weak prime.

It is an emirp because it is prime and its reverse (9741641321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231461479 - 2⁸ = 1231461223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231461409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615730739 + 615730740.

It is an arithmetic number, because the mean of its divisors is an integer number (615730740).

Almost surely, 2^1231461479 is an apocalyptic number.

1231461479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231461479 is an equidigital number, since it uses as much as digits as its factorization.

1231461479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 1231461479 is about 35092.1854406362. The cubic root of 1231461479 is about 1071.8654618672.

The spelling of 1231461479 in words is "one billion, two hundred thirty-one million, four hundred sixty-one thousand, four hundred seventy-nine".