1331442541 has 16 divisors (see below), whose sum is σ = 1565238528. Its totient is φ = 1116561600.

The previous prime is 1331442527. The next prime is 1331442587. The reversal of 1331442541 is 1452441331.

It is not a de Polignac number, because 1331442541 - 2¹⁵ = 1331409773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331442041) 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, 416971 + ... + 420151.

It is an arithmetic number, because the mean of its divisors is an integer number (97827408).

Almost surely, 2^1331442541 is an apocalyptic number.

1331442541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1331442541 is a deficient number, since it is larger than the sum of its proper divisors (233795987).

1331442541 is a wasteful number, since it uses less digits than its factorization.

1331442541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132.

The product of its digits is 5760, while the sum is 28.

The square root of 1331442541 is about 36488.9372413064. The cubic root of 1331442541 is about 1100.1218986123.

Adding to 1331442541 its reverse (1452441331), we get a palindrome (2783883872).

It can be divided in two parts, 13314 and 42541, that added together give a palindrome (55855).

The spelling of 1331442541 in words is "one billion, three hundred thirty-one million, four hundred forty-two thousand, five hundred forty-one".