1331154733 has 2 divisors, whose sum is σ = 1331154734. Its totient is φ = 1331154732.

The previous prime is 1331154719. The next prime is 1331154743. The reversal of 1331154733 is 3374511331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 775232649 + 555922084 = 27843^2 + 23578^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331154733 - 2⁵ = 1331154701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331154695 and 1331154704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331154703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665577366 + 665577367.

It is an arithmetic number, because the mean of its divisors is an integer number (665577367).

Almost surely, 2^1331154733 is an apocalyptic number.

It is an amenable number.

1331154733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331154733 is an equidigital number, since it uses as much as digits as its factorization.

1331154733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 31.

The square root of 1331154733 is about 36484.9932575025. The cubic root of 1331154733 is about 1100.0426245191.

The spelling of 1331154733 in words is "one billion, three hundred thirty-one million, one hundred fifty-four thousand, seven hundred thirty-three".