1531020141 has 18 divisors (see below), whose sum is σ = 2572531182. Its totient is φ = 874868400.

The previous prime is 1531020131. The next prime is 1531020143. The reversal of 1531020141 is 1410201351.

It can be written as a sum of positive squares in only one way, i.e., 1507691241 + 23328900 = 38829^2 + 4830^2 .

It is not a de Polignac number, because 1531020141 - 2⁵ = 1531020109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531020143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1735410 + ... + 1736291.

It is an arithmetic number, because the mean of its divisors is an integer number (142918399).

Almost surely, 2^1531020141 is an apocalyptic number.

It is an amenable number.

1531020141 is a deficient number, since it is larger than the sum of its proper divisors (1041511041).

1531020141 is a wasteful number, since it uses less digits than its factorization.

1531020141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471721 (or 3471711 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1531020141 is about 39128.2524654501. The cubic root of 1531020141 is about 1152.5513966442.

Adding to 1531020141 its reverse (1410201351), we get a palindrome (2941221492).

The spelling of 1531020141 in words is "one billion, five hundred thirty-one million, twenty thousand, one hundred forty-one".