40370061631 has 4 divisors (see below), whose sum is σ = 40370976712. Its totient is φ = 40369146552.

The previous prime is 40370061623. The next prime is 40370061637. The reversal of 40370061631 is 13616007304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40370061631 - 2³ = 40370061623 is a prime.

It is a super-2 number, since 2×40370061631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40370061593 and 40370061602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40370061637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387825 + ... + 480778.

It is an arithmetic number, because the mean of its divisors is an integer number (10092744178).

Almost surely, 2^40370061631 is an apocalyptic number.

40370061631 is a deficient number, since it is larger than the sum of its proper divisors (915081).

40370061631 is an equidigital number, since it uses as much as digits as its factorization.

40370061631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915080.

The product of its (nonzero) digits is 9072, while the sum is 31.

Adding to 40370061631 its reverse (13616007304), we get a palindrome (53986068935).

The spelling of 40370061631 in words is "forty billion, three hundred seventy million, sixty-one thousand, six hundred thirty-one".