1214523531 has 16 divisors (see below), whose sum is σ = 1937701920. Its totient is φ = 747398880.

The previous prime is 1214523523. The next prime is 1214523547. The reversal of 1214523531 is 1353254121.

1214523531 is a `hidden beast` number, since 121 + 4 + 5 + 2 + 3 + 531 = 666.

It is not a de Polignac number, because 1214523531 - 2³ = 1214523523 is a prime.

It is a super-2 number, since 2×1214523531² = 2950134814705415922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1214523495 and 1214523504.

It is not an unprimeable number, because it can be changed into a prime (1214523581) 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 15 ways as a sum of consecutive naturals, for example, 1729740 + ... + 1730441.

It is an arithmetic number, because the mean of its divisors is an integer number (121106370).

Almost surely, 2^1214523531 is an apocalyptic number.

1214523531 is a deficient number, since it is larger than the sum of its proper divisors (723178389).

1214523531 is a wasteful number, since it uses less digits than its factorization.

1214523531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460203 (or 3460197 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1214523531 is about 34850.0147919624. The cubic root of 1214523531 is about 1066.9284875627.

Adding to 1214523531 its reverse (1353254121), we get a palindrome (2567777652).

The spelling of 1214523531 in words is "one billion, two hundred fourteen million, five hundred twenty-three thousand, five hundred thirty-one".