354840681131 has 4 divisors (see below), whose sum is σ = 375713662392. Its totient is φ = 333967699872.

The previous prime is 354840681121. The next prime is 354840681133. The reversal of 354840681131 is 131186048453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131186048453 = 401 ⋅327147253.

It is not a de Polignac number, because 354840681131 - 2⁶ = 354840681067 is a prime.

It is a super-2 number, since 2×354840681131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354840681133) 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, 10436490605 + ... + 10436490638.

It is an arithmetic number, because the mean of its divisors is an integer number (93928415598).

Almost surely, 2^354840681131 is an apocalyptic number.

354840681131 is a deficient number, since it is larger than the sum of its proper divisors (20872981261).

354840681131 is a wasteful number, since it uses less digits than its factorization.

354840681131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20872981260.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 354840681131 in words is "three hundred fifty-four billion, eight hundred forty million, six hundred eighty-one thousand, one hundred thirty-one".