1311053428 has 48 divisors (see below), whose sum is σ = 2458552320. Its totient is φ = 609928704.

The previous prime is 1311053407. The next prime is 1311053437. The reversal of 1311053428 is 8243501131.

It is a happy number.

It is a super-2 number, since 2×1311053428² = 3437722182141102368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311053396 and 1311053405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124576 + ... + 2125192.

It is an arithmetic number, because the mean of its divisors is an integer number (51219840).

Almost surely, 2^1311053428 is an apocalyptic number.

It is an amenable number.

1311053428 is a deficient number, since it is larger than the sum of its proper divisors (1147498892).

1311053428 is a wasteful number, since it uses less digits than its factorization.

1311053428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1311053428 is about 36208.4717711201. The cubic root of 1311053428 is about 1094.4773964851.

Adding to 1311053428 its reverse (8243501131), we get a palindrome (9554554559).

The spelling of 1311053428 in words is "one billion, three hundred eleven million, fifty-three thousand, four hundred twenty-eight".