151420142531 has 4 divisors (see below), whose sum is σ = 173051591472. Its totient is φ = 129788693592.

The previous prime is 151420142501. The next prime is 151420142543. The reversal of 151420142531 is 135241024151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135241024151 = 367 ⋅368504153.

It is a cyclic number.

It is not a de Polignac number, because 151420142531 - 2¹⁰ = 151420141507 is a prime.

It is a super-2 number, since 2×151420142531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151420142494 and 151420142503.

It is not an unprimeable number, because it can be changed into a prime (151420142501) 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, 10815724460 + ... + 10815724473.

It is an arithmetic number, because the mean of its divisors is an integer number (43262897868).

Almost surely, 2^151420142531 is an apocalyptic number.

151420142531 is a deficient number, since it is larger than the sum of its proper divisors (21631448941).

151420142531 is an equidigital number, since it uses as much as digits as its factorization.

151420142531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21631448940.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 151420142531 its reverse (135241024151), we get a palindrome (286661166682).

The spelling of 151420142531 in words is "one hundred fifty-one billion, four hundred twenty million, one hundred forty-two thousand, five hundred thirty-one".