156213731333 has 6 divisors (see below), whose sum is σ = 171706002342. Its totient is φ = 142012482920.

The previous prime is 156213731321. The next prime is 156213731351. The reversal of 156213731333 is 333137312651.

It can be written as a sum of positive squares in only one way, i.e., 140427819169 + 15785912164 = 374737^2 + 125642^2 .

It is not a de Polignac number, because 156213731333 - 2¹² = 156213727237 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 (156213731393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 645511166 + ... + 645511407.

It is an arithmetic number, because the mean of its divisors is an integer number (28617667057).

Almost surely, 2^156213731333 is an apocalyptic number.

It is an amenable number.

156213731333 is a deficient number, since it is larger than the sum of its proper divisors (15492271009).

156213731333 is a wasteful number, since it uses less digits than its factorization.

156213731333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291022595 (or 1291022584 counting only the distinct ones).

The product of its digits is 102060, while the sum is 38.

The spelling of 156213731333 in words is "one hundred fifty-six billion, two hundred thirteen million, seven hundred thirty-one thousand, three hundred thirty-three".