1312231053 has 16 divisors (see below), whose sum is σ = 2017938560. Its totient is φ = 742965696.

The previous prime is 1312231049. The next prime is 1312231103. The reversal of 1312231053 is 3501322131.

It is not a de Polignac number, because 1312231053 - 2² = 1312231049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312231253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284350 + ... + 288927.

It is an arithmetic number, because the mean of its divisors is an integer number (126121160).

Almost surely, 2^1312231053 is an apocalyptic number.

It is an amenable number.

1312231053 is a deficient number, since it is larger than the sum of its proper divisors (705707507).

1312231053 is a wasteful number, since it uses less digits than its factorization.

1312231053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573396.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1312231053 is about 36224.7298540652. The cubic root of 1312231053 is about 1094.8049951945.

Adding to 1312231053 its reverse (3501322131), we get a palindrome (4813553184).

The spelling of 1312231053 in words is "one billion, three hundred twelve million, two hundred thirty-one thousand, fifty-three".