1331354531 has 16 divisors (see below), whose sum is σ = 1454530560. Its totient is φ = 1211202720.

The previous prime is 1331354513. The next prime is 1331354573. The reversal of 1331354531 is 1354531331.

It is not a de Polignac number, because 1331354531 - 2¹⁴ = 1331338147 is a prime.

It is a super-2 number, since 2×1331354531² = 3545009774428459922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331354494 and 1331354503.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934886 + ... + 936308.

It is an arithmetic number, because the mean of its divisors is an integer number (90908160).

Almost surely, 2^1331354531 is an apocalyptic number.

1331354531 is a deficient number, since it is larger than the sum of its proper divisors (123176029).

1331354531 is a wasteful number, since it uses less digits than its factorization.

1331354531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426.

The product of its digits is 8100, while the sum is 29.

The square root of 1331354531 is about 36487.7312394180. The cubic root of 1331354531 is about 1100.0976582718.

Adding to 1331354531 its reverse (1354531331), we get a palindrome (2685885862).

The spelling of 1331354531 in words is "one billion, three hundred thirty-one million, three hundred fifty-four thousand, five hundred thirty-one".