306144135105431 has 4 divisors (see below), whose sum is σ = 349879011549072. Its totient is φ = 262409258661792.

The previous prime is 306144135105401. The next prime is 306144135105451. The reversal of 306144135105431 is 134501531441603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 306144135105431 - 2²² = 306144130911127 is a prime.

It is a super-3 number, since 3×306144135105431³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306144135105401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21867438221810 + ... + 21867438221823.

It is an arithmetic number, because the mean of its divisors is an integer number (87469752887268).

Almost surely, 2^{306144135105431} is an apocalyptic number.

306144135105431 is a deficient number, since it is larger than the sum of its proper divisors (43734876443641).

306144135105431 is an equidigital number, since it uses as much as digits as its factorization.

306144135105431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43734876443640.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 306144135105431 in words is "three hundred six trillion, one hundred forty-four billion, one hundred thirty-five million, one hundred five thousand, four hundred thirty-one".