1011320403140 has 48 divisors (see below), whose sum is σ = 2157553407744. Its totient is φ = 398114236800.

The previous prime is 1011320403131. The next prime is 1011320403167. The reversal of 1011320403140 is 413040231101.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 151625 + ... + 1430255.

It is an arithmetic number, because the mean of its divisors is an integer number (44949029328).

Almost surely, 2^{1011320403140} is an apocalyptic number.

1011320403140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011320403140 is an abundant number, since it is smaller than the sum of its proper divisors (1146233004604).

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

1011320403140 is a wasteful number, since it uses less digits than its factorization.

1011320403140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279268 (or 1279266 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1011320403140 its reverse (413040231101), we get a palindrome (1424360634241).

The spelling of 1011320403140 in words is "one trillion, eleven billion, three hundred twenty million, four hundred three thousand, one hundred forty".