1531120151 has 16 divisors (see below), whose sum is σ = 1701302400. Its totient is φ = 1366178400.

The previous prime is 1531120141. The next prime is 1531120169. The reversal of 1531120151 is 1510211351.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1531120151 - 2²² = 1526925847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531120121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524885 + ... + 527793.

It is an arithmetic number, because the mean of its divisors is an integer number (106331400).

Almost surely, 2^1531120151 is an apocalyptic number.

1531120151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1531120151 is a deficient number, since it is larger than the sum of its proper divisors (170182249).

1531120151 is a wasteful number, since it uses less digits than its factorization.

1531120151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1531120151 is about 39129.5304214094. The cubic root of 1531120151 is about 1152.5764919281.

The spelling of 1531120151 in words is "one billion, five hundred thirty-one million, one hundred twenty thousand, one hundred fifty-one".