1331512045 has 16 divisors (see below), whose sum is σ = 1606587840. Its totient is φ = 1059379200.

The previous prime is 1331512033. The next prime is 1331512051. The reversal of 1331512045 is 5402151331.

It is a happy number.

It is not a de Polignac number, because 1331512045 - 2⁷ = 1331511917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944301 + ... + 945709.

It is an arithmetic number, because the mean of its divisors is an integer number (100411740).

Almost surely, 2^1331512045 is an apocalyptic number.

It is an amenable number.

1331512045 is a deficient number, since it is larger than the sum of its proper divisors (275075795).

1331512045 is a wasteful number, since it uses less digits than its factorization.

1331512045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1331512045 is about 36489.8896271282. The cubic root of 1331512045 is about 1100.1410411437.

Adding to 1331512045 its reverse (5402151331), we get a palindrome (6733663376).

The spelling of 1331512045 in words is "one billion, three hundred thirty-one million, five hundred twelve thousand, forty-five".