1531230100 has 36 divisors (see below), whose sum is σ = 3325071904. Its totient is φ = 612067680.

The previous prime is 1531230079. The next prime is 1531230101. The reversal of 1531230100 is 10321351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531230101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167857 + ... + 176743.

Almost surely, 2^1531230100 is an apocalyptic number.

1531230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531230100 is an abundant number, since it is smaller than the sum of its proper divisors (1793841804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1531230100 is a wasteful number, since it uses less digits than its factorization.

1531230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10624 (or 10617 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1531230100 is about 39130.9353325473. The cubic root of 1531230100 is about 1152.6040799218.

Adding to 1531230100 its reverse (10321351), we get a palindrome (1541551451).

The spelling of 1531230100 in words is "one billion, five hundred thirty-one million, two hundred thirty thousand, one hundred".