1201310040 has 64 divisors (see below), whose sum is σ = 4118780160. Its totient is φ = 274584960.

The previous prime is 1201310039. The next prime is 1201310051. The reversal of 1201310040 is 400131021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201309998 and 1201310025.

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, 714226 + ... + 715905.

It is an arithmetic number, because the mean of its divisors is an integer number (64355940).

Almost surely, 2^1201310040 is an apocalyptic number.

1201310040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201310040 is an abundant number, since it is smaller than the sum of its proper divisors (2917470120).

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

1201310040 is a wasteful number, since it uses less digits than its factorization.

1201310040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430152 (or 1430148 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1201310040 is about 34659.9197921749. The cubic root of 1201310040 is about 1063.0451300006.

Adding to 1201310040 its reverse (400131021), we get a palindrome (1601441061).

The spelling of 1201310040 in words is "one billion, two hundred one million, three hundred ten thousand, forty".