1331354551 has 8 divisors (see below), whose sum is σ = 1375179264. Its totient is φ = 1287584760.

The previous prime is 1331354513. The next prime is 1331354573. The reversal of 1331354551 is 1554531331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331354551 - 2⁹ = 1331354039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331354581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38796 + ... + 64558.

It is an arithmetic number, because the mean of its divisors is an integer number (171897408).

Almost surely, 2^1331354551 is an apocalyptic number.

1331354551 is a deficient number, since it is larger than the sum of its proper divisors (43824713).

1331354551 is a wasteful number, since it uses less digits than its factorization.

1331354551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27461.

The product of its digits is 13500, while the sum is 31.

The square root of 1331354551 is about 36487.7315134827. The cubic root of 1331354551 is about 1100.0976637804.

Adding to 1331354551 its reverse (1554531331), we get a palindrome (2885885882).

The spelling of 1331354551 in words is "one billion, three hundred thirty-one million, three hundred fifty-four thousand, five hundred fifty-one".