1345311951 has 4 divisors (see below), whose sum is σ = 1793749272. Its totient is φ = 896874632.

The previous prime is 1345311931. The next prime is 1345311959. The reversal of 1345311951 is 1591135431.

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 1345311951 - 2¹⁰ = 1345310927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345311959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224218656 + ... + 224218661.

It is an arithmetic number, because the mean of its divisors is an integer number (448437318).

Almost surely, 2^1345311951 is an apocalyptic number.

1345311951 is a deficient number, since it is larger than the sum of its proper divisors (448437321).

1345311951 is an equidigital number, since it uses as much as digits as its factorization.

1345311951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448437320.

The product of its digits is 8100, while the sum is 33.

The square root of 1345311951 is about 36678.4943938543. The cubic root of 1345311951 is about 1103.9286384311.

The spelling of 1345311951 in words is "one billion, three hundred forty-five million, three hundred eleven thousand, nine hundred fifty-one".