1351738831 has 4 divisors (see below), whose sum is σ = 1422883000. Its totient is φ = 1280594664.

The previous prime is 1351738783. The next prime is 1351738837. The reversal of 1351738831 is 1388371531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1388371531 = 2221 ⋅625111.

It is a cyclic number.

It is not a de Polignac number, because 1351738831 - 2¹¹ = 1351736783 is a prime.

It is a super-2 number, since 2×1351738831² = 3654395734466493122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351738837) 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, 35572056 + ... + 35572093.

It is an arithmetic number, because the mean of its divisors is an integer number (355720750).

Almost surely, 2^1351738831 is an apocalyptic number.

1351738831 is a deficient number, since it is larger than the sum of its proper divisors (71144169).

1351738831 is an equidigital number, since it uses as much as digits as its factorization.

1351738831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71144168.

The product of its digits is 60480, while the sum is 40.

The square root of 1351738831 is about 36766.0010199641. The cubic root of 1351738831 is about 1105.6837577271.

It can be divided in two parts, 1351738 and 831, that added together give a square (1352569 = 1163²).

The spelling of 1351738831 in words is "one billion, three hundred fifty-one million, seven hundred thirty-eight thousand, eight hundred thirty-one".