1213428467331 has 6 divisors (see below), whose sum is σ = 1752730008380. Its totient is φ = 808952311548.

The previous prime is 1213428467309. The next prime is 1213428467389. The reversal of 1213428467331 is 1337648243121.

It is a happy number.

1213428467331 is a `hidden beast` number, since 1 + 2 + 1 + 34 + 284 + 6 + 7 + 331 = 666.

It is not a de Polignac number, because 1213428467331 - 2¹⁹ = 1213427943043 is a prime.

It is a super-2 number, since 2×1213428467331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213428467131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67412692621 + ... + 67412692638.

Almost surely, 2^{1213428467331} is an apocalyptic number.

1213428467331 is a deficient number, since it is larger than the sum of its proper divisors (539301541049).

1213428467331 is a wasteful number, since it uses less digits than its factorization.

1213428467331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134825385265 (or 134825385262 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 1213428467331 in words is "one trillion, two hundred thirteen billion, four hundred twenty-eight million, four hundred sixty-seven thousand, three hundred thirty-one".