1240201031 has 4 divisors (see below), whose sum is σ = 1242136464. Its totient is φ = 1238265600.

The previous prime is 1240200991. The next prime is 1240201069. The reversal of 1240201031 is 1301020421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1240201031 - 2³⁰ = 166459207 is a prime.

It is a super-2 number, since 2×1240201031² = 3076197194586925922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240200997 and 1240201015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240201931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966755 + ... + 968036.

It is an arithmetic number, because the mean of its divisors is an integer number (310534116).

Almost surely, 2^1240201031 is an apocalyptic number.

1240201031 is a deficient number, since it is larger than the sum of its proper divisors (1935433).

1240201031 is an equidigital number, since it uses as much as digits as its factorization.

1240201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935432.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1240201031 is about 35216.4880560228. The cubic root of 1240201031 is about 1074.3951256624.

Adding to 1240201031 its reverse (1301020421), we get a palindrome (2541221452).

The spelling of 1240201031 in words is "one billion, two hundred forty million, two hundred one thousand, thirty-one".