1155312407 has 2 divisors, whose sum is σ = 1155312408. Its totient is φ = 1155312406.

The previous prime is 1155312397. The next prime is 1155312427. The reversal of 1155312407 is 7042135511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155312407 - 2⁶ = 1155312343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1155312407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155312427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577656203 + 577656204.

It is an arithmetic number, because the mean of its divisors is an integer number (577656204).

Almost surely, 2^1155312407 is an apocalyptic number.

1155312407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155312407 is an equidigital number, since it uses as much as digits as its factorization.

1155312407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1155312407 is about 33989.8868341747. The cubic root of 1155312407 is about 1049.3003372122.

Adding to 1155312407 its reverse (7042135511), we get a palindrome (8197447918).

The spelling of 1155312407 in words is "one billion, one hundred fifty-five million, three hundred twelve thousand, four hundred seven".