1405232313 has 4 divisors (see below), whose sum is σ = 1873643088. Its totient is φ = 936821540.

The previous prime is 1405232299. The next prime is 1405232321. The reversal of 1405232313 is 3132325041.

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: 3132325041 = 3 ⋅1044108347.

It is a cyclic number.

It is not a de Polignac number, because 1405232313 - 2⁵ = 1405232281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1405232383) 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, 234205383 + ... + 234205388.

It is an arithmetic number, because the mean of its divisors is an integer number (468410772).

Almost surely, 2^1405232313 is an apocalyptic number.

It is an amenable number.

1405232313 is a deficient number, since it is larger than the sum of its proper divisors (468410775).

1405232313 is an equidigital number, since it uses as much as digits as its factorization.

1405232313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468410774.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1405232313 is about 37486.4283841499. The cubic root of 1405232313 is about 1120.0808596489.

Adding to 1405232313 its reverse (3132325041), we get a palindrome (4537557354).

The spelling of 1405232313 in words is "one billion, four hundred five million, two hundred thirty-two thousand, three hundred thirteen".