1231050528 has 96 divisors (see below), whose sum is σ = 3746736000. Its totient is φ = 392502528.

The previous prime is 1231050523. The next prime is 1231050533. The reversal of 1231050528 is 8250501321.

It is a happy number.

1231050528 is a `hidden beast` number, since 123 + 10 + 5 + 0 + 528 = 666.

It is an interprime number because it is at equal distance from previous prime (1231050523) and next prime (1231050533).

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (1231050523) 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, 11103 + ... + 50846.

It is an arithmetic number, because the mean of its divisors is an integer number (39028500).

Almost surely, 2^1231050528 is an apocalyptic number.

1231050528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1231050528 is an abundant number, since it is smaller than the sum of its proper divisors (2515685472).

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

1231050528 is a wasteful number, since it uses less digits than its factorization.

1231050528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61991 (or 61977 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1231050528 is about 35086.3296456041. The cubic root of 1231050528 is about 1071.7462178638.

Adding to 1231050528 its reverse (8250501321), we get a palindrome (9481551849).

The spelling of 1231050528 in words is "one billion, two hundred thirty-one million, fifty thousand, five hundred twenty-eight".