1145312407 has 4 divisors (see below), whose sum is σ = 1145380680. Its totient is φ = 1145244136.

The previous prime is 1145312359. The next prime is 1145312447. The reversal of 1145312407 is 7042135411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7042135411 = 63743 ⋅110477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145312407 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 (1145312447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10368 + ... + 48970.

It is an arithmetic number, because the mean of its divisors is an integer number (286345170).

Almost surely, 2^1145312407 is an apocalyptic number.

1145312407 is a deficient number, since it is larger than the sum of its proper divisors (68273).

1145312407 is an equidigital number, since it uses as much as digits as its factorization.

1145312407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68272.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1145312407 is about 33842.4645526888. The cubic root of 1145312407 is about 1046.2640951288.

Adding to 1145312407 its reverse (7042135411), we get a palindrome (8187447818).

The spelling of 1145312407 in words is "one billion, one hundred forty-five million, three hundred twelve thousand, four hundred seven".