343120401151554 has 48 divisors (see below), whose sum is σ = 743095018615392. Its totient is φ = 105574674651264.

The previous prime is 343120401151511. The next prime is 343120401151579. The reversal of 343120401151554 is 455151104021343.

It is a super-2 number, since 2×343120401151554² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133934817 + ... + 136472619.

It is an arithmetic number, because the mean of its divisors is an integer number (15481146221154).

Almost surely, 2^{343120401151554} is an apocalyptic number.

343120401151554 is an abundant number, since it is smaller than the sum of its proper divisors (399974617463838).

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

343120401151554 is a wasteful number, since it uses less digits than its factorization.

343120401151554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671171 (or 2671158 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

Adding to 343120401151554 its reverse (455151104021343), we get a palindrome (798271505172897).

The spelling of 343120401151554 in words is "three hundred forty-three trillion, one hundred twenty billion, four hundred one million, one hundred fifty-one thousand, five hundred fifty-four".