150621431 has 2 divisors, whose sum is σ = 150621432. Its totient is φ = 150621430.

The previous prime is 150621421. The next prime is 150621437. The reversal of 150621431 is 134126051.

It is a strong prime.

It is an emirp because it is prime and its reverse (134126051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150621431 - 2²⁶ = 83512567 is a prime.

It is a super-2 number, since 2×150621431² = 45373630952975522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 150621397 and 150621406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150621437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75310715 + 75310716.

It is an arithmetic number, because the mean of its divisors is an integer number (75310716).

Almost surely, 2^150621431 is an apocalyptic number.

150621431 is a deficient number, since it is larger than the sum of its proper divisors (1).

150621431 is an equidigital number, since it uses as much as digits as its factorization.

150621431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 150621431 is about 12272.7923065617. The cubic root of 150621431 is about 532.0620169566.

Adding to 150621431 its reverse (134126051), we get a palindrome (284747482).

The spelling of 150621431 in words is "one hundred fifty million, six hundred twenty-one thousand, four hundred thirty-one".