151231013 has 4 divisors (see below), whose sum is σ = 159190560. Its totient is φ = 143271468.

The previous prime is 151230979. The next prime is 151231021. The reversal of 151231013 is 310132151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151231013 - 2⁶ = 151230949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151230982 and 151231000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151231033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3979745 + ... + 3979782.

It is an arithmetic number, because the mean of its divisors is an integer number (39797640).

Almost surely, 2^151231013 is an apocalyptic number.

It is an amenable number.

151231013 is a deficient number, since it is larger than the sum of its proper divisors (7959547).

151231013 is an equidigital number, since it uses as much as digits as its factorization.

151231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7959546.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 151231013 is about 12297.6019206998. The cubic root of 151231013 is about 532.7788225857.

Adding to 151231013 its reverse (310132151), we get a palindrome (461363164).

The spelling of 151231013 in words is "one hundred fifty-one million, two hundred thirty-one thousand, thirteen".