351241540 has 48 divisors (see below), whose sum is σ = 797377392. Its totient is φ = 129194496.

The previous prime is 351241531. The next prime is 351241549. The reversal of 351241540 is 45142153.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (351241531) and next prime (351241549).

It can be written as a sum of positive squares in 8 ways, for example, as 99321156 + 251920384 = 9966^2 + 15872^2 .

It is not an unprimeable number, because it can be changed into a prime (351241549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69582 + ... + 74458.

It is an arithmetic number, because the mean of its divisors is an integer number (16612029).

Almost surely, 2^351241540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351241540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398688696).

351241540 is an abundant number, since it is smaller than the sum of its proper divisors (446135852).

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

351241540 is a wasteful number, since it uses less digits than its factorization.

351241540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176 (or 5174 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 351241540 is about 18741.4391122987. The cubic root of 351241540 is about 705.5621758759.

Adding to 351241540 its reverse (45142153), we get a palindrome (396383693).

The spelling of 351241540 in words is "three hundred fifty-one million, two hundred forty-one thousand, five hundred forty".