3251201240 has 32 divisors (see below), whose sum is σ = 8360232480. Its totient is φ = 1114697472.

The previous prime is 3251201237. The next prime is 3251201251. The reversal of 3251201240 is 421021523.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5805437 + ... + 5805996.

It is an arithmetic number, because the mean of its divisors is an integer number (261257265).

Almost surely, 2^3251201240 is an apocalyptic number.

It is an amenable number.

3251201240 is an abundant number, since it is smaller than the sum of its proper divisors (5109031240).

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

3251201240 is a wasteful number, since it uses less digits than its factorization.

3251201240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11611451 (or 11611447 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 3251201240 is about 57019.3058533686. The cubic root of 3251201240 is about 1481.4305075588.

Adding to 3251201240 its reverse (421021523), we get a palindrome (3672222763).

The spelling of 3251201240 in words is "three billion, two hundred fifty-one million, two hundred one thousand, two hundred forty".