1531212 has 12 divisors (see below), whose sum is σ = 3572856. Its totient is φ = 510400.

The previous prime is 1531199. The next prime is 1531217. The reversal of 1531212 is 2121351.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1531212² = 4689220377888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1531191 and 1531200.

It is not an unprimeable number, because it can be changed into a prime (1531217) 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, 63789 + ... + 63812.

It is an arithmetic number, because the mean of its divisors is an integer number (297738).

2^1531212 is an apocalyptic number.

1531212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1531212 is an abundant number, since it is smaller than the sum of its proper divisors (2041644).

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

1531212 is a wasteful number, since it uses less digits than its factorization.

1531212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127608 (or 127606 counting only the distinct ones).

The product of its digits is 60, while the sum is 15.

The square root of 1531212 is about 1237.4215126625. The cubic root of 1531212 is about 115.2599538428.

Adding to 1531212 its reverse (2121351), we get a palindrome (3652563).

The spelling of 1531212 in words is "one million, five hundred thirty-one thousand, two hundred twelve".