351976813481 has 2 divisors, whose sum is σ = 351976813482. Its totient is φ = 351976813480.

The previous prime is 351976813453. The next prime is 351976813501. The reversal of 351976813481 is 184318679153.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287617690000 + 64359123481 = 536300^2 + 253691^2 .

It is a cyclic number.

It is not a de Polignac number, because 351976813481 - 2²² = 351972619177 is a prime.

It is a super-2 number, since 2×351976813481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (351976813421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175988406740 + 175988406741.

It is an arithmetic number, because the mean of its divisors is an integer number (175988406741).

Almost surely, 2^351976813481 is an apocalyptic number.

It is an amenable number.

351976813481 is a deficient number, since it is larger than the sum of its proper divisors (1).

351976813481 is an equidigital number, since it uses as much as digits as its factorization.

351976813481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 56.

The spelling of 351976813481 in words is "three hundred fifty-one billion, nine hundred seventy-six million, eight hundred thirteen thousand, four hundred eighty-one".