1445131347 has 16 divisors (see below), whose sum is σ = 2118061440. Its totient is φ = 869148800.

The previous prime is 1445131339. The next prime is 1445131351. The reversal of 1445131347 is 7431315441.

It is a cyclic number.

It is not a de Polignac number, because 1445131347 - 2³ = 1445131339 is a prime.

It is a super-2 number, since 2×1445131347² = 4176809220164068818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1445131307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162822 + ... + 171467.

It is an arithmetic number, because the mean of its divisors is an integer number (132378840).

Almost surely, 2^1445131347 is an apocalyptic number.

1445131347 is a deficient number, since it is larger than the sum of its proper divisors (672930093).

1445131347 is a wasteful number, since it uses less digits than its factorization.

1445131347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334434.

The product of its digits is 20160, while the sum is 33.

The square root of 1445131347 is about 38014.8832301245. The cubic root of 1445131347 is about 1130.5829730036.

Adding to 1445131347 its reverse (7431315441), we get a palindrome (8876446788).

The spelling of 1445131347 in words is "one billion, four hundred forty-five million, one hundred thirty-one thousand, three hundred forty-seven".